If your oil filter is vertically or horizontally mounted, here's a pro tip to prime the filter before starting the engine. kzread.infoZF-SPAKtzrY?feature=share

@DK-Nachowifi

5 ай бұрын

@themotoroilgeek I've been a auto technician for years and I had a old timer. Tell me that didn't have to fill the oil filter if you did the oil change and no oil in filter. To start the engine and then turn it off and repeat atleast three times. To prime the oil in the system and through filter. I was never sold on not filling the oil filter so, I fill the filter still and then start and then turn engine off atleast three times. I would like to know your thoughts about this. After a oil change and oil in the filter should you start and immediately turn engine off multiple times before running the engine longer to prime the oil in the engine?

@Pighater22

5 ай бұрын

@@DK-Nachowifiturning it off and on does nothing because the oil pump doesn’t run with the vehicle off. But prefilling the filter just insures the system will prime faster, maybe takes a second to two at most. Prefilling the filter is good and can only help. If you can’t cause it’s a horizontal mount then oh well it is what it is.

@mrwebber35

5 ай бұрын

I know for a fact that pre-filling the filter prevents that little slowdown from a fresh oil change from bearings dragging or lifter delayed pump up. I don't know what was causing the engine to have a sort of load on it on the start up but prefilling the filter prevented that. Keep in mind that that I have several V8's with high mileage that did that. The cars I have always owned and have prefilled are a '76 Dodge B200 360C.I., a'79 Camaro 5L, an '88 Ford 5L and a '98 Ford 4.6L. Lets just say all my engines don't burn oil happily without additives well over 100K miles. I only had to hear that lag once for myself to be convinced. I should point out that I was a professionally trained mechanic back in 1989 where my journeyman taught me to always pre-fill the filter.

@themotoroilgeek

5 ай бұрын

@@mrwebber35 Thanks for sharing!

@ec9156

5 ай бұрын

🤣

I'm 70 and have been prefilling filters since I was 18, on a tip from a friend. This the first time I've ever heard it questioned. It blows my mind that people think new oil out of the container is contaminated!

@themotoroilgeek

6 ай бұрын

Right?

@jeffgriffith7003

6 ай бұрын

Especially given the fact that many smaller air cooled engine's don’t even have an oil filter, those are critical to start with clean oil.

@DanielSmith-yp7mw

6 ай бұрын

@@jeffgriffith7003 exactly. Great point.

@markaruski

6 ай бұрын

Do these people also filter their new milk from the grocery store before drinking it?

@Truckguy2007

6 ай бұрын

I always prefilled my filters when I had Chevy trucks. Can’t do it on fords.

I've been a heavy truck and equipment mechanic for 35 years. Today I serviced a Western Star that holds 11 gallons of engine oil. The two oil filters together held 1 1/2 gallons. I can't even imagine not pre-filling them.

@calgreco8607

5 ай бұрын

I can't imagine the bill for the oil change!

@dickjohnson7845

5 ай бұрын

That's a different animal than a daily driver auto. Special applications require different methods.

@danielquilesjr.3461

5 ай бұрын

Right there with you. I always pre fill all vehicles I work on unless not able to.

@Yukanhayt-Mhenow

5 ай бұрын

Watch garage 54 with the transparent oil filter, they fill instantly with the motor turning over!

@ryanstage3912

5 ай бұрын

That's a Centrifugal pump and filter so your comparing a mountain to a couple grains of salt.

"If it came out with oil, then it will go in with oil." - My father

@themotoroilgeek

Ай бұрын

Well said!

@karlpayne9069

6 күн бұрын

Mad respect to yo Pops😂

@sailormanoyster1849

5 сағат бұрын

​@@karlpayne9069i cant listen to this fellow screeching😮

I am a master technician, I've been around engines for the past 50 years and I agree FULLY with the practice of pre-filling a new oil filter prior to installing it. Best practice. Where possible (as on your SB Chevy V8). If it's a factory upside down cartridge or sideways mount, you're just out of luck. But looking back at all the engines I have serviced, repaired and diagnosed, there has not been ONE major engine (bearing) failure due to doing scheduled maintenance without pre-filling the filter. It's just moot. The small wear on the babbit of the bearing surfaces during the initial start has no siginificance on the engine lifespan. When all is said and done, major engine failures are caused by overheating, unfrequent oil changes and mechanical failures caused by incorrect fuel / air ratios and other problems causing an upset in normal engine operation outside of manufacturer's specs. This goes for your normal car or light truck engine. Race engines operate at much more demanding specs and other, stricter rules apply. Again, I fully agree with your video content, but the relevance in view of the actual engine life span is not given.

@heightsgolan8742

9 күн бұрын

my 7.3 diesel pickup has a huge oil filter. It would not be a moot point to run that motor with no oil pressure while waiting on that filter to fill.

@gonefilming2020

9 күн бұрын

@@heightsgolan8742 It is moot as far as the overall longevity of the engine is concerned - this is from half a century of experience in engine service. But if it eases your mind, you can pre-fill your filter to your heart's content.

@heightsgolan8742

8 күн бұрын

@@gonefilming2020 eases my mind?? You just admitted " the small amount of wear in start up". So maybe ease your own mind since no oil pressure for several seconds is a moot point and rev the snot out of it before oil pressure. My first rebuild was in 1969 on a car. But many small engines and one motorcycle starting in 1965. So, I have seen much in my OVER 50 years of EXPERIENCE. So many main bearing knocks and rod knocks. Too many to count. So it DOES EASE my mind to see oil pressure right away. I guess you get a thrill out of seeing that red light in the dash stay on as long as possible. Oh yeah, lets purposefully let that 2 qt filter on my diesel slowly fill while the crank is without oil. It don't matter.

@gonefilming2020

8 күн бұрын

@@heightsgolan8742 Woah, dude. You off your thyroid medication? Of course you also have OVER 50 YEARS EXPERIENCE. And of course your experiences are sliced bread as opposed to mine. Nowhere did I say to "...rev the snot out of it before oil pressure" or that I "get a thrill out of seeing that red light in the dash stay on as long as possible". You did not get the intent of my post. Perhaps read things so many times over, until you can follow the content. Or have someone explain it to you. And it's perfectly o.k. to have a different opinion - no need to discredit others, because only your opinion counts. Perhaps find someone to give you a hug. Everything will be o.k.. Promised. 🤗

@heightsgolan8742

8 күн бұрын

@@gonefilming2020 amen bro. thanks

As a lifetime pro mechanic and hi-performance geek, I just want to thank you both for going the extra mile to disprove some of the incredibly stupid stuff floating around the internet....you have my deepest respect!

@bobmcgehee1749

6 ай бұрын

Some people like to argue for sake of arguing

@themotoroilgeek

6 ай бұрын

Thanks, I appreciate it. The response to this video is literally mind blowing, LOL

@johno9507

6 ай бұрын

​@bobmcgehee1749 What a load of crap, how can you say people like to argue for the sake of it? I want to see proof. 😏

@bobmcgehee1749

6 ай бұрын

@@johno9507 Ok, go look in the mirror.

@johno9507

6 ай бұрын

@@bobmcgehee1749 😉 I couldn't resist

65 years old and changing oil for about 55 years with my dad. We have pre-filled since the first one. Proud to say I’ve paid for only 2 oil changes in my life. I look after the family’s cars.

@JustAGuy85

5 ай бұрын

Same here. Have always done free maintenance on my CLOSE relatives cars (grandmother, rest her soul, my mom, my brother, mine, and my sister when she lived at home when we were all teens. Also the ex and ex-mother in law). I like to get to pick out the oil, though, (either Pennzoil Platinum 5W-30 OR Rotella T6 5W-40, depending on the engine) and always, always tell them to use an AC Delco filter for GM and Motorcraft for Ford. That's just how it's done. I have a 5.0 (the old school one), so I use the giant FL-1A. Mom's 4.6 3v and bro's 4.6 2v and 4v S/C gets the FL-820S. Silicon anti-drainback valve. And then there's a 3800II in the family in a Park Avenue, it gets the AC Delco PF-47... or the PF-47e when there's no PF-47's in sight. I think that's the right one. Haven't seen the plain PF-47 in a long time, really. I just know in my gut that "e" on the PF-47e is for "economy", meaning, economical parts inside of the filter lol.. aka, cheap.

@__WJK__

5 ай бұрын

@@JustAGuy85 - Hmmm... seems you might be familier with "Project Farm's" youtube channel(!?)

@Yukanhayt-Mhenow

5 ай бұрын

Same here but I never prefilled the filters because the engine fills it the instant you turn the engine over. Garage 54 did a clear one

@user-wv1pj6wh4h

5 ай бұрын

HOW MUCH YOUR ENEGINE DID LAST?

@billboswell7275

5 ай бұрын

@@user-wv1pj6wh4h I usually get over 225,000 miles / 350,000 kms before selling or the body rusts out.

Thanks! I never pre-filled my filters in the past (not because of thinking it was a bad thing, just lack of knowledge), but will from now on!

@BingBongYourLife

12 күн бұрын

Same!

Been changing my own oil for 20 years. Always filled the filter before install. Never was told to do so, never heard to to do it, I just did it. Glad I have.

@themotoroilgeek

Ай бұрын

Glad to help

@jimgagne3801

Ай бұрын

I'm 56 and been doing it for 39 years ...Do you know why you and I have been doing this for so long and were never told to do it? Cause we are not dumb. So to all you young dumb people out there that think your reinventing the mouse trap, If it comes off the motor with oil in it, don't you think you should put the new filter back on the same way you took it off? And for all you that think the new oil is dirty till it goes through a new filter,....You are just a special kind of stupid, aren't you. My God ! young people are Dumb ! As the saying goes, "Youth is wasted on the young"

@frankorobinson1540

Ай бұрын

And how much actually stays in the filter before you get it tightened 😮lol if its mount upside-down 😂😂😂❤

@christians131

Ай бұрын

⁠@@frankorobinson1540Bro you obviously just flip the car over in that case 🙄

@frankorobinson1540

Ай бұрын

@@christians131 actually you can just crank the engine over with ignition coil fuse out crank until red oil light goes out and good to go .but flipping the car over works too lol

Another thing is that massive equipment like Caterpiller and Komatsu that are for quarry use have engines worth stupid amounts of money. Those machines have a prelube system to build oil pressure before every start to maximize engine life.

@miltonwells6750

6 ай бұрын

What if you spin the engine over without crank it?

@hotrodray6802

6 ай бұрын

Accumulator systems for this are pretty reasonable priced. Plumb into the gauge hole. Road race cars use similar to prevent starvation during cornering.

@gregoryclemen1870

6 ай бұрын

having worked in a hospital, now retired, the "CAT " diesel engines running generators would crank the engine with cylinder unloaders open until oil pressure was established, closing the cylinder unloaders/ shutting off starter motor(s), and letting the engine start/ run, first at at an idle then ramp up to operating R.P.M.( 1800), allowing the transfer switches to operate. we tested generators every two weeks. the engines also have coolant block heaters to keep the engines as close to operating temperature as possible. the oil cap. on these engines are 60 gallons

@jacobmartin1951

6 ай бұрын

@@miltonwells6750That all I do. Hold down fuel pedal crank it over for 15-20 seconds. Fills the filter.

@jamesmedina2062

6 ай бұрын

@@miltonwells6750Not good enough. The engine starter spins engine a few revolutions also before it starts chugging. Don't be lazy!! Just prefill filter

In the 1970s my Grandfather taught me to always fill the oil filter first, and lubricate the seal, always wipe the mating surface clean as well ! Been doing it that way ever since ! It just makes sense. Never had a lubrication problem with an engine ! My 97 Silverado is over 307 thousand miles still working great 👍

@willg.5168

6 ай бұрын

Vortec 5.7 is the Godzilla of V-8's💪🏽

@alanmerritt860

6 ай бұрын

What do you do when you have to turn your filter upside down?

@marcludwick512

6 ай бұрын

Anti drain back valve, most of it will stay in the filter without coming out.@@alanmerritt860

@tommurphy4307

6 ай бұрын

i've built 180-cubic-inch V6 motors that have made 275bhp- with a slightly massaged holley model 4412 2-barrel carb- and all motor. lets see mr. goodwrench do THAT.

@BobVan

6 ай бұрын

@@alanmerritt860spin it on really fast?? There’s definitely some dumb designs out there with oil filter placement.

I spent 50 yrs in the business, Building Engines from small gas to Heavy Duty Diesel, This is a habit I practiced through my career, Filled Filter is the Best way, Excellent Best Practice !

@themotoroilgeek

7 күн бұрын

Thanks for sharing

I always pre-fill the filter three times. When I let it sit between fills I can see the level go down as it soaks into the filter material. Thanks for all the great info.

This 70 year old always prefills his oil filter and I also concur on being careful not to get any pieces of the seal from the oil jug into the oil. Changing your own oil and filter is also a great time to inspect the engine area and under carriage for any leaks or damage underneath.

@themotoroilgeek

6 ай бұрын

Thanks for sharing

@gregoryclemen1870

6 ай бұрын

you will get a better job by doing it yourself, if you let the quickie lube joints do it, they do not care.

@dennisadorno6721

6 ай бұрын

I think the guys who post comments like that are truly just looking for attention.....There, there my uninformed friend, why bother with a prefill??? Or for that matter why bother changing your oil at all??? It's just a big scam to make the oil companies richer....Ha ha

@JetFire9

6 ай бұрын

With my Jag and Range Rover, the oil is fully changed from the top of the engine.

@tommurphy4307

6 ай бұрын

they do it that way to keep the showroom floors cleaner...@@JetFire9

Amen!!! I work for a Fleet and have done this for well over 35 years. I can see and hear the difference upon start-up after the oil and filter change. You can see how long it takes for the oil pressure light to go out while cranking and at initial start-up. You can also hear any low oil pressure related knocks that exist in that engine until the oil pressure light goes out, and you can hear the sudden disappearance of that noise when it does go out. The only reasons people have to justify not doing the pre-filling of the oil filter method are: The textbooks do not mention doing it. The owner's manuals do not mention it. Finally, some oil filters are mounted at an extreme angle or even upside down which prevent a total fill of the filter without spilling oil during installation. In the last case mentioned, it still helps to add oil slowly to the filter while tilting it and rotating it around to at least saturate the media. Then install it. The majority of the time it takes to reach oil pressure while cranking and at initial start-up is because the media is still absorbing oil before it can let oil pass through. I know, I know, some will say "who has time for that?" I do. Especially for my own vehicle. I still do it for the Fleet vehicles I work on because I care. I know it helps longevity and I want to do the best job I can to ensure that. If you don't, even on your own car, you are plain and simple just being lazy. Before you saw this video or read this comment you could claim ignorance, but not anymore.

@cr500mike

6 ай бұрын

Right -On !!!

@budlanctot3060

6 ай бұрын

There's some crazy Russian mechanics on KZread who do weird things with cars & engines. They once modified an oil filter by grafting a clear body onto a filter base plate. It took a surprisingly long time to fill the dry oil filter. They didn't time it, but I'd say it was almost 5sec from when first started.

@tomphillips2608

6 ай бұрын

Makes sense. My '11 Tacoma 4 .0 l v6 filter is a spin on upside down. From now on , I don't care if it gets sloppy, I will at least try to saturate the media with fresh oil. Thanks!

@jerrykorman7770

6 ай бұрын

I bought new a 2007 Toyota FJ Cruiser with the 4.0 V6. The spin on oil filter is near the top of the engine, upside down. Many many oil changes and never, ever heard a knock or tick after changing the oil. Oil light went out almost instantly

@The77stevo77

6 ай бұрын

​@@jerrykorman7770bull 💩 roll the window down and listen. It ticks like crazy for about 1 or 2 seconds. Can't be good

The people saying you shouldn’t pre-fill an oil filter are the same people saying the earth is flat 🙄

@mustangracer5124

Ай бұрын

Don't try to explain WHY they put filters 90 deg. to the engine block.. it'd embarrass you.

@eriklarson9137

Ай бұрын

@@mustangracer5124Imagine taunting someone with that super important knowledge. Holy crap.

@janisvindavs

Ай бұрын

I was going to write those words. 😂

@christophercrawford5680

Ай бұрын

The earth is flat and I’ve always prefilled my filters, you must be the type that thinks you were only taught the truth and can’t think for yourself, you might be the BELOW AVERAGE

@user-xh7cy3uj8x

25 күн бұрын

Not necessarily my friend, been pre-filling my filters for 30 years…and the earth IS flat🙂. I reacted the same way(complete dismissal)…until I searched out the matter and discovered it’s only the tip of the iceberg of things which have been hidden from us.

Thanks for the tip. I have never even thought of filling a new oil filter before installation, but I will now !

@themotoroilgeek

2 ай бұрын

Any time!

My father taught me to pre-fill the filter when I was a kid and I've always done so. It always seemed common sense to me that you will build oil pressure faster by pre-filling. You can actually HEAR the difference in the initial engine startup with many engines. You generally hear a tiny bit of engine clatter before pressure builds, and starting an engine with an empty filter makes noise for at least a couple seconds longer.

@themotoroilgeek

4 ай бұрын

Thanks for sharing!

@thewatcher611

4 ай бұрын

Clear flood mode is easier, and better. When you remove the filter, you let more oil out than just what is in the filter. What are you going to do about that? Clear flood mode primes the entire system without the stress of combustion.

@Terminxman

4 ай бұрын

so just use flood mode...

@elephant1851

4 ай бұрын

@@thewatcher611 Do both if you know you can't afford a new engine.

@paul41to45

4 ай бұрын

dad taught me to prefill also, more than 50 years ago. common sense really proven here

As a millwright I worked on many large industrial engines for 50 years and most of them had a pre lube pump on them so that should tell anyone how important lube is at start up. They also had post lube pumps on the turbos that were spinning at 30,000 RPM at shutdown.

@joesutherland225

5 ай бұрын

If you want caterpillar actually offers oil analysis for a relatively low cost .I believe amsoil also offers this analysis too

@rooky55

5 ай бұрын

Thanks Joe. Working with large diesel / natural gas prime movers for 33 years oil analysis was routine and required by the insurance underwriters. Take care.@@joesutherland225

@paulricketts1089

5 ай бұрын

...VW has auxillary waterpumps that circulate water through the turbo for 2 or 3 minutes AFTER shutdown. It keeps the oil from carmelizing inside the turbo. Thus prolonging the life of the turbo. It is why truckers don't shut off their engines immediately after driving. So when you see a semi-truck setting there idling for a time while parked , you'll understand why.......

@ProudDad1976

5 ай бұрын

I believe all engines should have an electric auxiliary pump for the oil however if you prefill or not a car without that will not have good pressure for the first five or so seconds prefill or no so I see no reason to refill unless you add that pump. Side note I have added that pump to my classic cars, it is not hard to do and you can tell the different every time you start the cars

@tedclark7860

5 ай бұрын

You can do that with a car too by making it so it won't run when you try to start it.

i have changed the engine oil several times and i never did prefill the filter with oil. and by not doing so, it never did any damage to the engine. now a friend has told me that its best to prefill the filter with oil before installing it in the engine. thanks for the demonstration.

You guys pretty much slammed the door shut on this case. It's shocking that anyone can disagree but then again there are people that think the world is flat!

@mrod0855

Сағат бұрын

wait.....its not?

You'd be surprised of how many dealer mechanics and lube places skip that part. Filling the filter. I know first hand mechanics who told me they don't bother with it because of the extra time it takes. It's not them worrying about contaminated oil. Part of why I will always change my own oil.

@robertswift6101

6 ай бұрын

those are speed oil changes,,the faster the more money they make,,they could care less about your car

@themotoroilgeek

6 ай бұрын

Thanks for sharing!

@lukew2194

6 ай бұрын

You think anybody working on your car is deeply concerned about it. It's just a job to them regardless of where you go@@robertswift6101

@lukew2194

6 ай бұрын

You think that a mechanic is not pushing cars in and out as fast as he can to make the most money for himself.@@robertswift6101

@reason2gether

6 ай бұрын

exactly! @@robertswift6101

I have been pre-filling my oil filters for 50 years and now you proved the fact thank you.

@bustjanzupan1074

4 ай бұрын

And i am pre-filling oil filters or at least pre-cranking the horizontal filters for more than 30 years.

@1957f100

4 ай бұрын

60 years for me

@bustjanzupan1074

4 ай бұрын

@@1957f100 GoooOoood !!! ! !!! Thanks to God that some people on the planet still Know how an engine bearings are Working !!! ! !!!

@28tpi

4 ай бұрын

40 yrs for me so by my calculations that's 180 yrs collectively. ✅

@tommurphy4307

3 ай бұрын

the only thing that was proven is the fact that pre-filling the oil filter makes pressure more quickly upon startup. if it makes you feel better- good for you.

Well I cannot believe that I am commenting. It seems obvious that pre filling the filter is a good idea. I understand that a horizontal filter can drain in any case but the argument that new oil is not filtered before it enters the engine beggars belief. Keep up the good work and a good informative video and I hope no one comes back with any more negative comment.

Those who say you shouldn't pre-fill the filter have understood nothing about how a car's lubrication system works.

@sjfk1306

2 күн бұрын

Or, we understand everything about it and aren’t idiots…. Also, reading isn’t very difficult…. Many filters even have pictures for you simpletons…. Don’t prefill..

@ITZ_Auggy_

2 күн бұрын

@@sjfk1306or are just idiots and don’t listen to the facts and data in the video😂

@ducmore7391

Күн бұрын

​@@sjfk1306I'm an automotive engineer. I've worked for Audi, BMW, Alfa Romeo... and also in motorcycle racing. At Audi and BMW, we did tests on the oil circuit's looping time. With a cold engine, this can take up to 30 seconds (tests on a V6 TDI). The difference with an empty filter is 15 seconds longer. If some filter manufacturers tell you not to fill the filter, it's because some idiots do it with used or unfiltered oil. Obviously, it's very difficult to make a picture of this, for idiots who can't read and think they know everything.

@sjfk1306

Күн бұрын

@@ducmore7391 it’s not the filter manufacturer. It’s Cummins and caterpillar….. Says it in service manuals and on the filter/box…. It doesn’t take 30 seconds, or even 15 seconds. Cool story but you’ve just lost all respect with that BS. Even at 0 degrees it won’t take 45 seconds.

@ducmore7391

Күн бұрын

The tests I'm talking about were carried out in an Audi-approved laboratory. We carried out the tests in accordance with strict validation rules. I repeat that closing the oil circuit on start-up took just over 30 seconds. This was on a V6 TDI. I know what I saw, I was there! I'm not going to waste my time describing the test method, I've got better things to do. I also took part in tests at BMW, on an M5 (E34). The lubrication circuit was "dry crankcase". The tests were carried out empirically, with less rigor, because they weren't in an approved laboratory. But looping the oil circuit also took a lot of time, that's for sure. It would be foolish to think that these figures apply to all engines. As for Cummins and Caterpillar, I can't say because I'm not a master of heavy-duty mechanics. I'm just talking about what I know and what I've experienced. About your respect, that's the least of my worries.

Great video. When I was a kid my friend’s dad was a petrochemical engineer and told us to always pre-fill filters when doing an oil/filter change. My auto shop teacher in high school said the same thing and I’ve been pre-filling filters every-time for the last 46 years with no problems.

@themotoroilgeek

5 ай бұрын

Thanks for sharing

@TheGrumpyFarmer

4 ай бұрын

@@themotoroilgeekI’m a 57 year old farmer who’s changed filters on a lot of tractors and combines over the years and I’ve never filled oil filters 🤷‍♂️

@waveriderz2687

4 ай бұрын

Have a side mount filter. How do you do that without spilling oil every where?

@kskip4242

4 ай бұрын

​@@waveriderz2687if you pour the oil in the oil filter and let it sit upward for a while before installing it it will soak into the filter media just don't overfill it.

@hillbillyhenry5098

4 ай бұрын

I all ways filled mine up half way to get it on , because a lot of them are side ways but still have about half the oil in it.

Even though, as a seasoned mechanic I already knew the outcome before I watched the video. It was still a very good and informative study. Although, the fact that ANYONE would think prefilling oil filters is bad amazes me!!😅

@themotoroilgeek

5 ай бұрын

Thanks for sharing!

@jeffro221

5 ай бұрын

@@GeorgeSanford-pb1yj Very true. I used to not believe pre-filling could damage my engine. I was cocky, so I did an experiment. I did an oil change and deliberately picked a tiny spec of dirt off the ground, about the size of a flake of black pepper, and put it in the filter while I pre-filled it. Then when done, I started the engine, and sure enough, after 10 seconds, the engine exploded. I studied all the parts and every bearing in the engine was completley wiped out. Now when I change oil, I do it as if I was working on the space shuttle.....clean room, complete body suit with respirator face mask. And no more pre-filling!

@user-et1id3hd5i

5 ай бұрын

No oil at all will do it faster.@@GeorgeSanford-pb1yj

@Georgiagreen317

4 ай бұрын

BS! @@jeffro221

@bustjanzupan1074

4 ай бұрын

It amazes me tooo !!! ! !!! But, this is obviously Just Because they Are sooo Lazy, or Careless , or Greeddy !!! ! !!!

I work on a car ferry. Our big cat V8s need to be pre lubed with a pump before starting. It can take up to 10 seconds for the oil to get to the top end of the engine. And you can hear the valves tick until oil gets into the top end. So it absolutely makes sense to fill up a filter. Just like it makes sense to pre-lube our big diesel.

Good information for those who do their own oil change. I've been pre filling for years . Your video just proved I've been doing this right thing.

@themotoroilgeek

19 күн бұрын

Right on!

When I was a young man in my 20’s My grandfather always said preload your oil filter my Dad told me this too… And they both always gave me great advice… thanks for confirming that for me… Now I’ve no doubt I’ve been doing it right for years…..

I’m just recently going back to doing my own oil changes and I used to always prefill. The idea is you are allowing as little air into the pump as possible so it pressurizes as fast as possible. It’s weird this is even a debate. Even if it served no other purpose than piece of mind I’d still do it. It adds maybe 30 seconds of work to the job.

@unikornkontroller

5 ай бұрын

@@user-uv7up4vg6i But the entire system needs pressure regardless of if it’s downline or upstream from the pump. Air anywhere in the system causes pressure to drop, right?

@davelowets

5 ай бұрын

​@@user-uv7up4vg6iIt's not so much "air in the pump", but the filter will obviously be full of nothing but air if you don't fill it first, and those few seconds it takes to pump the filter full of oil means that the engine is running with ZERO oil pressure, and the engine suffers a bit of wear from it. That little bit of damage DOES accumulate over time, and takes precious life off the engine.

@davelowets

5 ай бұрын

@user-uv7up4vg6i That oil left in the bearings is basically useless without pressure behind it. It's a proven fact that up to 90% of engine wear happens during start-up, when there isn't any pressure in the system. If oil sitting in the bearings was enough to protect the engine, we would use it, instead of a much more expensive special clingy, thick, assembly lube when we build an engine.

@guytowers8479

5 ай бұрын

What about vehicles with oil filters that go on sideways 🤷. So it's not going to be fully filled.

@JimV90

5 ай бұрын

@@guytowers8479 You still put oil in it. just enough before it wants to spill out. Anything is better than nothing.

I have run into lots of things on the internet and right out of the teacher's mouth that IS NOT TRUE. By the way, I am a Design Engineering Technologist and a Certified Industrial Millwright Mechanic. So glad that you took so much effort to prove that you know what you are talking about. It's one of my peeves when someone starts talking and they DON'T

@themotoroilgeek

2 ай бұрын

Thanks for sharing!

You hurt a lot of peoples egos by proving them wrong, some will still not listen because of pride

@themotoroilgeek

Ай бұрын

Truth!

@williamlaurence4754

4 күн бұрын

I was a marine mechanic for years, pre lubrication is a big deal, you can't just stick on a dry filter and wait half a minute for the oil pressure to come up.. These hurt guys can carry on doing what they are doing won't do any great harm on a small engine but now they are informed.

@Riley_1955

4 күн бұрын

That's because you can't argue with an idiot .... To them they are always right and you are always wrong ..... And believe me there are a lot of idiots floating around out there that have zero common sense.

@Jonjs99

3 күн бұрын

proved? what?

@tedcity5861

21 сағат бұрын

​@@Jonjs99that you didnt watch the video and/or have no comprehension. 😂😂 😊😊

in the early 80's Bosch sent a Service Bulletin advising techs to pre-fill filters. The reason given was that the wet filter media was stronger and less likely to have elements break away during initial cold start.

@themotoroilgeek

6 ай бұрын

Thanks for sharing!

@jamesmedina2062

6 ай бұрын

that was before designed obsolescence. Now they do all kinds of things to accelerate wear like giving bad break in advice and long oil change intervals. I knew an engineer for aircraft told me we have the tech to make engines last millions of miles but choose to not use it for that. Brakes too!

@reason2gether

6 ай бұрын

Yes, the filter media can experience a great shock from the incoming oil pressure wave while being unsupported on the filtered side by an equilibrium of pressure. Another great reason to pre-fill the media.

@monikhushalpuri

6 ай бұрын

Hmmm on my 3.7 mustang if I were to pre fill the oil filter and install it since its installed sideways then oil will come out while installing...I don't like dry installing the filter so what I started doing is filling the filter and then letting all the oil drain out of the filter...good to know about shock of oil pressure on dry filter media...I suppose my method of filling the oil filter and then draining and installing to saturate the filter media reduces this issue at the least on horizontally mounted oil filters

@AMS-dx7wo

6 ай бұрын

@@monikhushalpurion side mount filters, I fill them ~½ full. oil will wick/saturate media.

I have filled the filter on my 91 460 gas for 25 years, 440 thousand miles. I still drive it now. No rattle, no smoke, no other complaints.

@tswvxyastswvyeej5510

2 ай бұрын

I have never prefilled my filter over 40 years with the same car but I don't see any problem. I don't think it will make any difference no matter what we do.

@crazyfella984

Ай бұрын

​@@tswvxyastswvyeej5510 I agree with you. My Silverado is 19 years old. Never pre-filled the oil filter. No engine problems.

This channel neurologically satisfies me in making sure I'm doing the best logical thing for the longevity of my vehicle. THANK YOU!

@themotoroilgeek

13 күн бұрын

Our pleasure!

@kenny5292

13 күн бұрын

@@themotoroilgeek What's your trick to pre fill cartridge oil filters on the top of the engine?

@themotoroilgeek

13 күн бұрын

@@kenny5292where clear flood mode is available, do that.

Learned this 30+ years ago. Kudos for dropping the knowledge and research to prove.

@themotoroilgeek

Ай бұрын

Thanks!

For 30 yrs I have always prefilled my oil filters and I don't think I will ever stop doing it that way.

@churchyandfriends

5 ай бұрын

Is it really a bad thing to not pre fill the filter? I’ve never pre filled a filter.

@bustjanzupan1074

4 ай бұрын

Aaammmeeennn , Me Tooo !!! ! !!!

@IDontWantAHandle101

4 ай бұрын

​@@bustjanzupan1074And me. It's not hard and it does save those golden seconds on first start. Anyone who argues different is just dumb.

I've always prefilled. I feel like anyone who understands how an oil pump, and oil pressure / lines / fluid mechanics works would instinctively know that pre filling will always make sense. I've only ever heard 'its a waste of time' from people who dont understand how things work, or lack the ability to think ahead, or are hacks who dont care about anything.

@themotoroilgeek

6 ай бұрын

Right on!

@lukew2194

6 ай бұрын

I guess people who design engines for a living don't have a clue about engine lubrication and the people who make oil filters are idiots also. However, some goof ball in silly glasses has all the right answers.

@brucenichols540

6 ай бұрын

@@lukew2194 Actually YOU are correct. Those folks are 'compartmentalized' and know very little outside of their specialty.

@kirkstiefel2102

6 ай бұрын

Really? What about large filters? Running the engine for seconds longer with low/no oil pressure can't be good. Filling the filter can't hurt and surely must benefit the engine. People who design engines agree with pre-lubing. Racers do it all the time. Pre-lube kits can be installed on engines. You throw a switch before starting the engine and the oil is pressurized BEFORE starting. Dry starts are NEVER good! @@lukew2194

@georgedavall9449

6 ай бұрын

Indeed!

Great video guys, this information has been helpful and has finally given me a straight forward way to look at this from now on. Thanks

The idea of pre-filling the oil filter is something that was intuitively obvious to me since I was a kid in the 1960s, so it was amazing to me to see these car care 'experts' today trying to tell us otherwise on the internet. The internet is equally useful for spreading stupidity as it is knowledge.

So many engines have filters mounted at angles, or even horizontally, that pre-filling becomes problematic, and probably a moot point. Many other factors contribute far more to engine wear than not pre-filling the oil filter.

@DekGT5mad

5 ай бұрын

Yeah, longcranking because people don't pause at the on position for a few seconds for the ECM to do it's checks when starting the engine is probably the most common! My 323 takes 2 cranks when I pause at "on" to start, but if I go straight through it takes 7 or 8 to start!

@steveeab2364

5 ай бұрын

The filter on my F150 is horizontal and pre-filled really isn't an option

@fluoridaman2332

5 ай бұрын

@@steveeab2364 Fill it up and let it soak for at least ten minutes then drain it back out into the container. This helps prevent media damage from the initial oil rush on startup.

@SmallBaller

5 ай бұрын

A major part of that starting sequence is fuel pump priming. I wait the few seconds until the pump stops @@DekGT5mad

@swaggerdo7231

5 ай бұрын

Nah, yeah fam; I also have issues with scratching my arse and picking my nose at the same time. Life if just hard, amirite?

Speaking for just over 50 years of owning Toyota’s and doing oil/filter changes every 3000 miles and NEVER prefilling the filters, each car had over 220,000 to 225,000 miles on them before I traded or sold them, all with excellent compression and very little oil burning between changes, never had excessive chain/sprocket wear, worn valve guides/stems etc. I am 74 now and still doing it the same way. Proof is in the pudding. Lots of wives tales out there along with poorly made engines and engines with poor care and neglect from their owners.

@ricosilverback2608

4 ай бұрын

Kudos to Toyota

@joeyoungs8426

4 ай бұрын

Same here with two Caravans that were near 300k before selling. Currently an Equinox and Malibu with over 200k and counting.

@dix_pack_of_sixie

4 ай бұрын

Nothing is always...you both beat the odds. But then again, knowing the science & data support prefilling the filter, how much less wear would have occurred had the system been properly primed and pre-filled?

@joeyoungs8426

4 ай бұрын

@@dix_pack_of_sixie With respect to the Caravans it doesn’t really matter. I got my miles out of them. One of them went to 360k before a t-bone accident (no casualties) ended its run. Jury’s still out on the two Chevys.

@ihd-3603

4 ай бұрын

Can’t say I’ve ever heard of an engine failing due to not pre-filling the filter. Most are from using oil not specified by manufacturer or not following recommended oil change intervals.

Been driving and doing my own oil changes for 45 years, never prefilled any oil filter. Never experienced any engine failures either.

Awesome video! I've always prefilled my oil filters ever since I was taught to do that in my high school auto mech class back in 1980.

Fun fact - when you run an engine without pressure for four seconds after an oil change, it still has enough residual oil on the moving parts that will provide lubrication and avoid engine damage. I say it doesn't matter one way or the other, but if it makes you feel better, then pre-fill it. Also, wouldn't it be a bit messy for side-mounted filters?

@brentbradley6711

5 ай бұрын

Agreed, been changing my oil for 60 years, never filled the filter, and never had a problem..

@davidvanderbyl4015

5 ай бұрын

Exactly. I always run my engine just before changing the oil to mix it up. So it has plenty of lubrication for those 4 seconds. And I've read at least one manufacturer's instructions to *not* prefill. Due to the risk of accidental contamination. You can easily end up with a piece of the foil seal or some kind of debris falling in. It's not a big deal either way, but totally unnecessary to prefill. And in many cases you can't, due to the position. Waste of time, in my view.

@holeshot26

5 ай бұрын

im with you guys. I've never pre-filled the filter on any of my vehicles or other peoples vehicles in the past 30+ years of changing my own & others oil. i also always let the cars run til i know the oil is warm before i change it so it flows out faster so yeah, that engine is fully lubed up 30min prior to draining it. never had an issue! and some cars these days the filter goes on top of the engine - subaru fa20/fa24 so how the F are you supposed to pre-fill that?!😂

@MattExzy

5 ай бұрын

Sometimes I fill, sometimes I don't. There's always some valvetrain chatter when not filling, but it's definitely barely for a second or two. The only reason I prefill though is because I find it's faster to get the right level on the stick, since it's already filled; not necessarily any mechanical protection.

@Chengocl

5 ай бұрын

This is spot on. Furthermore, theres lots of filter designs that don't allow for prefilling, such as many Toyota engines where just a filtering element inside a case is replaced. This has neven been an issue.

I’ve prefilled my filters for over 50+ years. And this proves what I’ve been doing 👍👍👍

@Johnsmith-zi9pu

6 ай бұрын

proves nothing.

@xbrizzcakez

5 ай бұрын

I`ve never prefilled a filter for 50 years without any problems. Current vehicles are 15 &20 years old.

@stewiegriffin5075

5 ай бұрын

Are you still driving that same car ???? My daily driver is 40 years old and I have never pre filled the filter in all that time so it proves nothing

@quintrapnell3605

5 ай бұрын

I doubt it matters but whatever google told the man was dumb

@MechaTronic161

5 ай бұрын

Prefilled or not, it doesn’t matter.

I am 58 and have pre filled my filters since I was 20. Taught from my grandfather I believe because of exactly this reason, the few seconds of starting a vehicle it will have a few dry cycles. I don't think even auto shops do this so I do my own.

I didn't read all the posts, or see the previous posts. While I can understand some not thinking to prefill, I can't think of why someone who knows about it, would intentionally not do it. [Well, unless they think the filter has to clean the new oil. But even that's lame.] It was a good video. I'm glad in the age of KZread, we have people that can do real tests like this so we can see actual results.

This makes perfect sense considering the majority of engine wear happens at startup.

@themotoroilgeek

6 ай бұрын

Absolutely!

@02hreblue30

6 ай бұрын

makes zero sense. only oil at start up is on cylinder walls, bearings and pistons from previous use. Engine hasn't run yet.

@TheBigRed.

6 ай бұрын

Lol.🤣🤣🤣🤣🤣

@Resistculturaldecline

6 ай бұрын

More because of a cold engine clearances.

@bobbybishop5662

6 ай бұрын

I want to see you prefill a filter that mounts horizontally or one mounted on the top mounted upside down. I'll wait.

Great video. As a retired aircraft mechanic it is wild to think anyone would recommend not pre filling. Unless someone is cleaning the filter housing area thoroughly prior to removing the filter, more contamination would come from there than a new bottle of oil.

@TIMEtoRIDE900

5 ай бұрын

I pre filled a filter and crawled under my truck, careful not to spill the oil, then bumped the fuel line and got sand all over the filter !! Back to the auto parts store for a new one !!

@fluoridaman2332

5 ай бұрын

@@TIMEtoRIDE900 Good filters come with a plastic seal cover and you can reinstall it after prefill then remove it when you are in position to install it onto the engine. It's best to rinse clean the area of dirt and debris prior to service to prevent any contamination.

@malcomreynolds4103

5 ай бұрын

You should be fired if you are doing something in the maintenance routines that the manufacturer does not tell you to do. That is how you get people killed. If it tells you to fill it, fill it. If it doesn't tell you to fill it, don't.

@johnmuir8305

5 ай бұрын

This is why I don't fly in GA shitboxes

@TIMEtoRIDE900

5 ай бұрын

@@malcomreynolds4103 Sure - now explain how people are actually "killed" by pre-filling an oil filter where the manual says "don't bother" - - - ??

Thank you for this excellent video, I have always filled the filter only for another reason, they told me that by filling the filter before with new oil, damage to the new filter is avoided due to the oil entering under pressure when the engine starts.

@themotoroilgeek

2 ай бұрын

Glad it helped

I started in a shop when I was 15 and didn't prefill filters my first few years. Now I always fill when possible and have for years. Even on a Duramax where the filter sat horizontal, I would prefill and lose very little 15W-40 getting the filter started. Good to see some actual data.

Also if motor oil was dirty from the bottle how would small engines like lawn mowers and generators survive since they are splash lubricated with NO oil filter!

@themotoroilgeek

6 ай бұрын

Great point!

@RogerMiller-td5yc

6 ай бұрын

Or type 1 Volkswagen engines

@turbodog99

21 күн бұрын

They fail at 500 hours, far short of the 10,000 fir a modern engine

@TheSonarSailor

19 күн бұрын

Not to mention, how do you fill your engine with pre-filtered oil? You don't, that's how. Bottle straight into the engine oil fill.

@whatsit2ya247

16 күн бұрын

@turbodog99 At 500 hours hmm? I wonder how my 25 year old walk behind John Deere is still chugging along, starts first or second pull even after sitting all winter 🤔

I am a newer tech and I have not been pre-filling oil filters, wasn't even something that came up in school or around the shop. After seeing this video I am going to start doing this! Thank you for posting this.

@GrandePunto8V

6 ай бұрын

Now imagine, that there are literally hundreds of such little things you don't know about the trade.

@rogerdonoho4924

6 ай бұрын

Makes perfect sense. Although I have not practiced it. Now, with my 2016 colorado, I couldn't if I tried. Cartridge filter on top of engine. My car's filter is cannister. But extremely tight space and on the slant. Have to turn filter a couple of angles to get where it's going . Days of V8 with cannister are pretty much over.

@rocknraptor3195

6 ай бұрын

🤦wow

@madewithscraps

6 ай бұрын

Hopefully this shows you how much your schooling lacks for proper education of practicing the trade correctly. As a ASE Master Engine Builder, plus other titles, 33 year owner of automotive machine shop, look at books used in classes to see horrible statements and massive lacking of information required for the tech to be successful.

@Ozzy3333333

6 ай бұрын

I think my 29yo 1994 Toyota truck with 442K miles doesn't care, I have never prefilled my filter, 7 minutes per oil change with filter, and 5 minutes without filter (I change the filter every other time). Half a year to 30, no major work done, still running well.

Wetting filter media with the filtered substance before introducing flow across it has benefits, too. During construction of a nuclear propulsion plant we discovered higher than specified dP across new (paper or cotton) filter media when putting fluid systems in service. We figured-out if we wetted the filter media prior to introducing flow, we'd have much lower dP. A barrier film forms on the dry media until dP produces enough force to penetrate the barrier, especially on pleated media.

Friend of mine in the NHRA always told me to prefilled oil filter, and since he still holds a couple of records I'll listen to them, and have been pre-filled filter on my BMWS and Volvos for 20 years.

I've ALWAYS pre-filled my oil filters. Been doing it that way for the last 55yrs, and I've always changed my oil myself. I didn't need anybody to tell me that, it was just obvious. For the last 25yrs I've been using FilterMags on my oil filters, too. If everybody could see how much ferrous dust those magnets can pick up out of the oil and hold it until you replace the filter, they'd be using neodymium magnets on their (metal bodied)filters, too. Maybe you could do a scientific test of that, and cut open a filter and show viewers that, also.

@tommurphy4307

6 ай бұрын

probably a good idea for crappy blocks. when you inspect for metal- inspect for stray casting sand in the filter media while youre at it and you'll see that GM blocks are the WORST

@frankmartin4018

6 ай бұрын

You still got lublication on bearing when you start it up since you just had it running before you change the oil . I saw a boy one time changing oil, had the oil out, decided to move the car off the rack and put it back on the rack for some reason, never hurt the vehicle one bit, a fact, Than he put the oil in it, filter was already on it, owner seen him do that. LOL No, did not hurt the car, owner of the dealership knew it did not hurt the car, it was a Chevey Impala . By the way, I never did fill up oil filters on any car , not even my NIssan Altma and it has 151,000 miles on it now , and I done thousands of oil changes on state police cars as a head mechanic, , it still has lublicant on the bearing, and it will fill the oil fifter right up fast , never had a problem with it , NEVER , after changing oil in hundreds of police vehicles for over a decade . Don't rev it up until it picks the oil up you understand. LOL Only problem I ever had with those Dodge cars where cam shafts on those 318 motors would go out or those police would get the car hung up and rev it up wide open back and forth until they blow a hole in the piston . Now those real old police cars that had the 440 motors in them, it could have a dead cylinder on that piston and he can ran it like that also , LOL it would still do 140 mph with one dead cylinder and run smooth as pie, yes that is a fact . LMAO

It’s not just about oil starvation on initial startup. Pre filling the filter saturates the media and on startup the DP across the filter is lower in a full filter than in a dry filter. It also minimizes air in the oil.

@ratgreen

6 ай бұрын

Exactly, even with side mounted filters, I will fill the oil filter as much as I can to wet the filter media as much as possible, and pour out the excess if theres too much, for that exact reason.

@themotoroilgeek

6 ай бұрын

Right on!

@oneninerniner3427

6 ай бұрын

​​@@ratgreen sure you can, maybe not plumb full, but just because it's on a bit of an angle you can still get quite a bit in them. Some of the older Ford's it was real easy, they were pretty much vertical. One of my older pickups has an oil cooler with a horizontal remote mount for the filter. I can get it 2/3rds -3/4 ish full then hold it vertical and quickly tip it horizontal and spin er on. You don't lose much oil.

@kfelix2934

6 ай бұрын

when I had spark engines , I used to pull the disturbor cap to keep the engine from starting up and spin the engine 3-4 times to fill the filter and then replace the cable and then start the engine. I know that was being paranoid but that would prevent any oil starvation issue, but to be fair that was being overly parnoid. Newier cars and diesels you can do what I'm suggesting.

@martinlang9615

6 ай бұрын

@@ratgreenOn a side mount filter I do that too, except I totally fill the filter first until all air is purged, then hold horizontal until the level stabilises, then screw it on (with the a thin film of oil on the rubber of course).

Was a technician professionally for 20 years at a branded dealer, ALWAYS prefilled the filter. Never had any issues. Have ALWAYS prefilled on my personal cars and anyone else's I've worked on. For someone to say that unfiltered oil could damage your engine vs starting with a dry empty filter, hmmm yeah I'll take that risk of unfiltered oil

@themotoroilgeek

Ай бұрын

Right on!

Excellent post. And surprisingly in a subject that ought not cause any controversy. But, it does. I placed a link to this video on one of my Facebook rants on the subject.

Another tip for funnel storage, keep it upside-down with the openings covered. Small opening up leaves less chance of junk entering the funnel.

@DAK59

6 ай бұрын

I store mine in a gallon Ziploc bag. I also label the bag with the type of fluid the funnel is used for.

@Comm0ut

6 ай бұрын

I wipe mine off and toss them in the dishwasher with the next load of dishes. Dishwasher detergent makes short work of oil.

@ihd-3603

4 ай бұрын

Just hang mine on the wall until next time. 😂

I'm so glad that I don't Google things like, "should I pre fill an oil filter," because after 60 plus years of working on engines, I know that I should pre fill the oil filter. I know that the oil going into that filter is not "dirty," and I also know that most people are idiots.

@themotoroilgeek

4 ай бұрын

LOL

@thebronzetoo

23 күн бұрын

💯

When I started working for a lube shop I was taught that you only need to prefill diesel oil filters, for any thing else my thoughts are the thin film of oil left on the components after you drain the old oil is enough to prevent damage for the few seconds that a dry oil filter takes to fill up before the fresh oil is pumped through the engine

Thank you for posting actual data to back it up.

@themotoroilgeek

Ай бұрын

Happy to help!

I always pre-fill my filters, even the ones are mounted sideways, I just get them as full as I can without spilling any oil because some oil is better than none. I’ve always been told people don’t like to pre-fill filters because they’re worried about stuff falling into the filter like a sloppy mechanic would do. But I always make sure I’m in a clean environment without dust floating around and I’m always very mindful of anything that could get inside the filter before I install it so it’s really a non-issue unless you’re a sloppy mechanic.

@themotoroilgeek

6 ай бұрын

Thanks!

@thisisyourcaptainspeaking2259

6 ай бұрын

Yes, I think maybe they install the dry filter before removing the plastic wrap just to avoid any chance of contamination.

@lkeil84

6 ай бұрын

I hate the my Subaru had an upside down filter. Made it easy to change, but could not be prefilled.

@davidh.8513

6 ай бұрын

I fill the filter "as full as I can" on my side mounted John Deere Yanmar diesel engine also!

@georgedavall9449

6 ай бұрын

Very good comment jeff! I pre fill my filter inside, away from my workshop, and cover the filter as I take it out to the vehicle, and immediately install it. COMMON Sense after all.

When I was younger I was taught to add a little oil, about an ounce in the filter and swish it around to wet the filter material and prevent any damage to the dry filter when oil starts coming in under pressure. That and to put some oil on the seal to prevent seizing, which I'm fairly sure everybody does.

@RaduMichael

2 ай бұрын

Yeah, but that's not enough. Pour more.

@nickyborrisino

2 ай бұрын

Filter material does not get damaged by oil flow whether it is wet or dry.

@jimdunne1900

2 ай бұрын

Pressure can damage a new oil filter. The quality has fallen badly in recent years.

@nickyborrisino

2 ай бұрын

@@jimdunne1900 if you are using that bad of a quality oil filter on your engine, the filter will fail regardless of wet or dry and you kind of deserve what you get for using a cheap-ass Chinese shit filter. Genuine filters have no problems whatsoever, wet or dry.

@stephennichols586

Ай бұрын

The same people that don't prefill the oil filter are the same ones that change their oil with engine cold and leave moisture and other contaminates in engine

I don't care what anyone says about this topic, I always pre-fill my oil filters. One thing everyone needs to understand is all oil filters are paper filters so the paper filter is going to soak up quite a bit of oil. I would rather have my oil filter pre-filled and the paper filter wet before I start my engine. That's just my 2 cents. On my 1995 dodge ram (5.2Lt) I can't pre-fill my oil filter too much cause it sits at a 48 degree angle and it will leak if I fill it too much. And yes, u read that right, I have a 1995 dodge ram sport truck (5.2Lt) with over 260,000 miles and still runs great.

@themotoroilgeek

Ай бұрын

Right on!

@Jonjs99

3 күн бұрын

yes it will soak oil and make restriction on first start when air bubbles will pass ripping everything apart cut open filter and see for youself it will be damaged on first start already, leaving 10k km run on pure luck

I worked at a few different oil change shops about 17 years altogether, one shop I was there for 11 years and we serviced all types of cars and my boss always wanted me to pre fill the oil filters on high performance and horse power cars and of course diesels then after oil do a quick double start the engine so oil would fill up before adding oil pressure into the system. Some people agree with that way and other's say it doesn't matter. I do that way just because I'm used to it and it just seems to be more professional and it shows the customer that you take that extra step.

Like everyone says! Been priming filters since the 70s and I’ll keep doing it!! Thanks guys!!!

@lukew2194

6 ай бұрын

I have been drinking green tea all my life, I guess I will live forever.

Always pre-fill the oil filter if you can. It reduces the amount of time during that initial start the engine has low oil pressure from filling the oil filter itself.

@Scummy_shovel

6 ай бұрын

Lol. Uhh no. The oil pump is way before the filter. It’s gonna build pressure regardless of rather the oil filter is full or not. Pre fill. Don’t pre fill. Doesn’t matter

@garyalford9394

6 ай бұрын

Some filters set up straight and wont let you pre-fill.

@Scummy_shovel

6 ай бұрын

@@garyalford9394 and some like the pentastar are upside down AND cartridge so they 100% just bleed back down to the pan a few minutes after you shut the engine off.

@mback12000

5 ай бұрын

​@Russel_russelson No. There is no pressure until the system is filled. There is flow, but not pressure. Watch the video again. You can't have pressure pumping fluid into an empty cavity. There is no oil to the bearings while the filter is filling from empty.

@Scummy_shovel

5 ай бұрын

@@mback12000 I don’t need to. I have built engines for over 20 years. There is no pressure at the gauge sending unit because there isn’t any flow there. But the oil pump on ever engine is directly connected to the oil reservoir and builds pressure the second you start the motor. You can’t have “flow” if you don’t have any pressure to push the flow. Oil sending units are located on the top end usually You noticed he dint show testing with a empty full filter? You know why? Because the time Result is the exact same. I have built and tested this multiple times.

I've been changing my own oil and filter for nearly 60 years, and have never pre filled the filter, I'd never heard of the concept. I've never had a problem, but after watching this, I think I have a new habit. May be messy and not 100% successful with my Toyota V6 horizontal cartridge filter, but I'll give it a go. One thing I don't do is use the last half inch out of the plastic oil container as I have noticed some bits of dross in the bottom on occasions.

@dlloyd6300

Ай бұрын

dont waste your time its pointless unless the vehicle has sat for months without turning over. Especially with that filter. if you are worried just crank it and let it run for a minute before oil change. everything will be sufficiently coated.

@JR-ut1yx

2 күн бұрын

91 years here!

I agree with you about all that. Just note that during an oil change, you will never get all of the old oil completely out of the system. But still, I agree with you. Been pre filling my filters for 40 years and I have engines pushing 200K mi. Thanks for the fun, informative video.

@themotoroilgeek

Ай бұрын

Thanks for the info!

Guys, finally we have scientific and empirical approach to the oil topic, not just opinions of sofa specialist who express their opinions and those are true because they do so. Please make new videos more often. Your content is super terrific and useful.

@GrandePunto8V

6 ай бұрын

This type of knowledge is nothing new in the industry, oil analysis etc., was there for last 40-50 years. But somehow this is "new" to many people, especially in the automotive field. No one has an obligation to educate internet trolls.

@InexplicableBill

6 ай бұрын

@@GrandePunto8V Well ain't you a ray of fkn sunshine. Dude - EVERYONE has an obligation to educate internet trolls. Your way of thinking is the polar opposite of what it should be.

@MarkoVukovic0

6 ай бұрын

"sofa specialist" 🤣Love that! There are so many. I call them "armchair experts".

@cliffords.8341

6 ай бұрын

​@@InexplicableBill I believe his/her way of thinking is no education is good education. 🤪

@cliffords.8341

6 ай бұрын

​@@GrandePunto8V Nobody is saying oil analysis is new, but in this video it shows that new oil out of the bottle is cleaner than when it came out of and engine without filling the oil filter with oil prior to installation and after the system has been primed. It's showing the trolls that there is engine damage (crank main bearings and connecting rod bearings) due to not pre filling the oil filter. If this information is not put out there for the general public to know, then how are people to learn right from wrong. Everytime I sell and oil filter I inform my customer they should fill it with oil prior to installation and I explain why. They usually say if they do it will leak out when they install it because most of them are sideways on motorcycles. I tell them while the engine is warming up fill the filter with clean oil and let it sit and when it comes time to install it, it would have absorbed most of the oil and you're only going to lose maybe a table spoon.

I’ve always filled mine up with almost as much oil as they can hold on vertical or slightly angled filters. On horizontal mount ones, I add enough oil to be able to rotate it and soak the filter material without any running out.

@CatRacer1a2a

5 ай бұрын

Agreed. This is what I do. If I can't fully fill a filter because of the angle, I figure wetting the filter media is the best I can do.

@robertisaar

5 ай бұрын

Realistically, that's probably half full of the oil has time to saturate and pass through to the unfiltered side. Far better than nothing.

Someone may have mentioned this. This works on all things fuel injected. 1.) Press your gas pedal/throttle grip all the way to the floor, to induce "Flood Clear Mode" to disable to fuel pump. 2.) Crank your engine with pedal FIRMLY slammed ALL THE WAY TO THE FLOOR [remove aftermarket floor mats under gas pedal first]. 3.) Crank engine until oil light shuts off, then start the engine normally. 4.) Save your engine from catastrophic dry start. 5.) If you own a Kawasaki 636, or other race engine, you may need to "burp" the oil pump by loosening the oil filter for a second.

I change the engine oil on Cat excavators all the time. Not only is it a large filter, but they plumb the oil over to a separate filter base in order to make it more accessible. The hoses are fairly large and long (and a pain to replace, but that's another story). In all the years I've been doing this, I've never once seen it mentioned in Caterpillar literature to prefill the filter. But even if I did, there's no way to fill the hoses that go to the filter base. I also take oil samples every time i change the oil, and they usually come back with a recommendation if something is off. Again, it's never been mentioned as an issue. I'm not saying it's not a good idea, but I have to believe it's not absolutely necessary in every situation.

Great video! I have been pre-filling since I started doing my own oil changes 7-8 years ago. I’ve never heard that it was a bad idea. Common sense would dictate that it is a good idea. You proved it.

@__WJK__

5 ай бұрын

Exactly... total "common sense" for sure!

@brian_328

5 ай бұрын

Brand new oil in a brand new oil filter somehow not being filtered has to be one of the dumbest things I’ve ever heard. Exhaust bearing, blinker fluid, winter and summer air for your tires okay I can see where you made a mistake 😂 but this makes me think that some people wake up and stop using their brains.

@TheCompbuzz

5 ай бұрын

Not all filters can be prefilled though. Some are mounted sideways instead of up and down.

@PNH-sf4jz

5 ай бұрын

@@TheCompbuzz You do the best you can and clean-up any accidental or incidental spillage. Better than not pre-filling at all.

@olliefoxx7165

5 ай бұрын

​@TheCompbuzz You don't fill those filters all the way. You put in enough oil that won't spill then screw it in. Some oil is better than no oil.

I can't believe people would think pre filling a filter is a bad thing. I know what the ISO cleanliness numbers mean so I'm glad you touched at the end the difference in particles with the code number increase - im sure many out would be thinking the increase is only a couple of numbers, but each increase is actually doubling the number of particles

@themotoroilgeek

6 ай бұрын

Absolutely! Thanks for mentioning that!

@kychristell1779

6 ай бұрын

Definitely silly

@georgedavall9449

6 ай бұрын

It boggles the mind, doesn’t it?! I don't know what some People are thinking these days?

I remember changing my oil many years ago and I always filled the oil filter. My father was an engineer and he told me that people should change their oil filter more often so the blood of the engine (oil) was kept clean. Thanks for the information.

Very entertaining couple of guys here! I learned of the importance of pre-lubing for airplane engines that sit for extended periods. My last truck was a 2003 Sport-Trac with the notorious cam-chain failing 4.0L V6. I experienced the startup rattle at about 35K miles (nearly just broken in) and found out that when it sat for more than a couple days, the cam-chain tensioners, which were pressurized with oil, would go flat......it didn't rattle if started every day. I rigged up a starter relay switch on the dash so that I could crank the engine about 5 seconds and never had a startup rattle. I later learned that I could use a non-chipped key and just crank for about 5 seconds. A couple years ago, I traded the Sport-Trac with well over a 100K. My Tundra, with the 5.7 V8, has a cartridge filter which cant be prefilled. I have a non-chipped key that I use to pre-lube if the truck sits for a couple of days. For my Tundra oil changes, I stretch the cranking to about 10 seconds before swapping to the chipped key and starting the engine. Some might think it's too much trouble and to them, to each their own. I think I benefited from this little detail with the Sport-Trac and I think it's wise. I salute you Motor Oil Geeks and keep up your good info sharing. 🙂

I’ve been filling my filters since the 80s. I saw an article about it, and it made a lot of sense to me. I have a Chevy small block, so it works well. Even though now it’s running a remote filter mount, that is vertical, I still fill my filters. My street car has a vertical filter mount, and you can bet that I still fill it. I believe that otherwise, there’d be a huge air bubble that would cause some damage in starting the engine

@InexplicableBill

6 ай бұрын

When you say vertical... do you mean the filter screws down on the post or up? Most filters are vertical... or slightly diagonal, but screw upward from below. I'm trying to wrap my head around the idea of pre-filling an oil filter but then turning it over to mount it... 😱😱

@Enword_Jim

5 ай бұрын

The thing is, there's always an air bubble, the pickup tube drains when you empty the oil pan and there's also still some air space in a pre-filled filter. This test was flawed because they did not test how long it takes to get pressure after draining the engine and installing a pre-filled filter, it takes more time than an already primed engine. I still think you should pre-fill the filter, but you don't get instant oil pressure like they tried to demonstrate in this video.

@dhgmllcshea5038

6 күн бұрын

​@@Enword_JimRight on... underrated comment!

I’ve been pre filling oil filters during changes for 43 years. Thx for the confirmation.

@themotoroilgeek

5 ай бұрын

Glad to help

Hey I always filled or poured new oil in new filter to pre fill before installing. My concern is oil filters mounted in a horizontal position. I probably fill it with some new oil to help with dry filter if that makes sense. Is there any product I can add to my oil during oil changes to protect bearings and such during new oil changes? Excellent video

Great video and agree! The only argument that I've heard that may make sense is that prefilling the filter has the opportunity to accidentally introduce dirt into the filtered side of the filter and then those particles are sent directly to the bearings you want to protect. If you're careful, even that argument is a bad one.

Two points -working on and/or restoring vehicles and heavy equipment for 50 yrs I can't imagine that the oil out of the can is worse for your engine than the dirty oil you just removed from the crankcase. On some engines the flow is less the the diameter of a pencil with not a heck of a lot of GPM. I've always prefilled the filter and most of my machinery is from the 1950's with all ORINGINAL engines!

I REALLY like this topic: The home mechanic doing an oil change can also test this for themselves: Time how long it takes for the oil pressure to come on from when you crank the engine, when: 1/ new oil filter is pre-filled, 2/ new oil filter installed without oil. I know for a fact that it takes longer for the oil pressure switch light to go out. So of course I always pre-fill. I can’t believe people would think new oil would have particulates that could harm the engine without going through the oil filter first! It needs to get dirty FIRST! That’s serious overthinking right there, LOL 😂.

I've filled filters since my Father taught me in the mid 60's. I've since been an auto, OTR truck, and equipment mechanic/foreman and have always filled filters whenever possible. There are some filters that lay sideways that you cannot fill completely without oil running out of the filter.

as prior jet engine mechanic it makes sense to have lubrication dirty or not vs no lubrication. Dry starts from no oil in the oil filter is worse. So I prime my filters for all my vehicles as well.

I have started an engine after changing the engine oil and filter (empty). With the engine idling, there was a noticeable crankshaft bearing knock until the filter was full and oil pressure was established. The crankshaft bearings were all in good condition and not worn. When the filter was prefilled with clean engine oil, and the exercise repeated, oil pressure was reached within a couple of seconds. It makes sense to pre-fill the oil filter if you can. It makes no sense at all to start the engine with the oil filter empty if you don't have to.

@user-oq6bd1gw5s

5 ай бұрын

If it's knocking it's shit anyway, oil filter full of oil doesn't fix worn out parts, only your imagination is satisfied.

@lylethomsen7901

5 ай бұрын

If you keep changing the oil without pre oiling the filter, you will, sooner than later, experience Rod knock, or at least lifter wear. Always prelube the filter when changing oil in your engine!

@arcanekingo5716

5 ай бұрын

@@user-oq6bd1gw5s Ive worked at a lube shop. The newer cars knock the loudest.

@arthursmith643

4 ай бұрын

Many vehicles some very expensive have cartridges filters and they are not pre filled.

@bustjanzupan1074

4 ай бұрын

And if the filter is horizontally mounted , you just disconnect the nozzles/jets , or ignition sensor , or at old diesels disconnect the gas-switch on the High Pressure fuel pump, and than crank it Untill the oil-pressure light turns off , And only After that , you Can start the engine Peacefully !!! ! !!!

My Auto Tech teacher at Independence High in Charlotte was the first person that told us to pre fill a oil filter. He was a club racer and ran a big block Vette, which he said must have a full filter on start up. So I am glad you confirmed the info I got 45 years ago!!

@themotoroilgeek

6 ай бұрын

Is Charlotte area folks got to gleam info from the masters at Holman & Moody back in the day!

@davevan8864

6 ай бұрын

@@themotoroilgeek We went to the old shop many a time!!! thx

Amazing how some people think or lack of. Thank you for the video

I have always prefilled my filters simply because it made sense. The oil would not be flowing - no pressure, until all volumes were refilled. I can't prefill my Land Cruiser filters because they spin on horizontally, so I'd be pouring out the oil before getting the filter turned down to the gasket. I still add a little and lube the gasket... Cool analysis though! Thanks!

I have been prefilling filters since I was at least 16 or 17 on all of mine and my family's cars that I maintain. From age 16 to 21 I worked at a full service Texaco station. Every oil change I did there I prefilled the filters. I am so glad you did this video if for no other reason it backs up what I all ready knew.

@quonsetthehutt3105

5 ай бұрын

Too bad for those engines with sideways canister filters that can’t be pre filled

@user-wv1pj6wh4h

5 ай бұрын

good for you- your customeerr will offer you a gift for pre cum flters

@TexTheMaster

5 ай бұрын

​@@quonsetthehutt3105you can still prefill those kind of filters by priming the car

@scottmoto

5 ай бұрын

Yet in 45 years of wrenching I have never heard of or know anyone that did this. Not cutting it down, but it is not that common as you think.

@juddlebot2146

5 ай бұрын

Is not necessary to prefilled them anyways people been doing them for years they have no problems

I started changing oil way back in 1968 on my dads Electra and ended up doing many of my uncles cars before I got my first new car in 1974. Initially, never pre-filled those canister filters and always bothered me seeing the oil light come on and hearing the noise on the first initial start-up with the newly installed filter. Not sure WHY I waited so long to figure this out but starting in 1987, I finally started to prefil the filters on my cars and oil light goes out right away, again with no noise on initial startup. Back in the day, my dad and uncles only kept their cars and replaced them every 3 years but I keep my vehicles now a minimum of 10 years and never had any oil related issues pre-filling the canister filters before an install. And I seldom put on more than 3500 miles between changes (using dyno oil, not synthetic) and ALWAYS a new oil filter with each change. Changing the oil is probably one of the best things you can do as its the lifeblood of your car as far as Im concerned. Side note, Im not fond of FRAM filters, especially now that they are NOT made in the USA. I usually use OEM.

@themotoroilgeek

3 ай бұрын

Thanks for sharing!

@CHEECHMUN

2 ай бұрын

YES!!!

Yes!!! Finally we have a respectable video with knowledgeable staff that stays going above and beyond. I gotta say jus by running these true analysis and using methods that potentially can and are sort of like bird feeding, it really holds Value, and also its enabling the rest of us to understand truly whats the truth, how, and why it works!! May God bless ya, and thank you so Much for the knowledge!! Looking forward to absorb as much as knowledge and wisdom as possible!!! Keep up the quality video!! Sending much love and peace from California your way 😊

@themotoroilgeek

Ай бұрын

Thank you!

Great information here. Question, how do you advise to fill a filter that is mounted horizontally in a very difficult location 03 Ranger 3.0? Thanks

Lake almost mentioned it, but there's a reason filters have an inner seal. Maybe Lake can do a video on what it's for and why it's important. And i loved how quickly the pressure came up with a full filter! it was quicker than I was expecting.

@aaronvienot

5 ай бұрын

Equally to point: a prefilled filter that is newly installed, or an engine that's been sitting a while, won't have as much retained oil in the system as one that's been fully pressurized, shut off, and then run again a short time later. That last case is the only one they appear to have simulated. I would still expect the re-pressurization time to be shorter, but by how much? And what about with different oil pump styles, filter styles, and locations? There are a lot of variables to that question.

As a retired ASE Master Heavy Truck Technician, I can vouch for everything you put forth in this video. I started out in 1969 as a mechanic apprentice in a small speed shop. When we built and engine, we assembled it using Lubriplate. Put it on a run-in stand and flushed out the lubricating system before installing it in a car. As I got older, I switched over to heavy trucks where I spent 49 years. During that time, if it were at all possible, we would fill the oil filter.

@paulhunter9613

5 ай бұрын

Lubriplate used to be some of the best oil you could buy, very high zinc levels. I used it for decades . When taking off valve covers to replace the gaskets that were starting to leak, I noticed that the valvetrain and even the inside of the covers were absolutely clean, no sludge of any kind. And that was after 100,000 mi on the engine. Now the epa has forced lubriplate to reduce the amount of zinc so I have quit using it.

Spot on! This method prevents cavitation. VVT, cam phasers, and turbos will definitely show you their appreciation with longer life.

@themotoroilgeek

Ай бұрын

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