*Engine for sale, like new, only used twice, serious inquiries only!* I kid, I kid! As a serious tip though, be sure to occasionally check your oil level, older cars tend to burn more oil and it's a headache that can be easily avoided by checking your dipstick while your car fills up with gas. If you're into Instagram, consider following: instagram.com/engineeringexplained/. For product links, check the video description, like this $55K thermal camera haha - amzn.to/2mgV8XS. Shout out to FLIR for letting me borrow the camera!

@Xxthief411xx

7 жыл бұрын

Engineering Explained I can imagine the engine without oil is actually hotter but because the readings are coming from the surface of the engine, the lack of oil only allows convection rather than convection and conduction.

@miken87p

7 жыл бұрын

I think the engine is hotter with oil because the oil carries more heat and keeps everything stable. WIth no oil, you have just air and that cools faster than oil. Air just doesnt provide enough cooling or and barrier in tight tolerances

@FishMan72727

7 жыл бұрын

I have a guess why this may have turned out this way. The engine is new. A new engine is going to have perfectly smooth parts and will therefore have minimal friction. As wear would increase over time, so would the friction. Another thought I had is that one of the main duties of oil is to be the weak point, and therefore break down instead of the metal pieces. when you combine these thoughts together you realize how the oil really helps; the oil prevents wear by sacrificing itself. Adding this thinking to engineering principles, you realize surface temperature at equilibrium is about heat added to the system. The combustion adds much more heat than any friction, especially in this system, which brings me to the next point. You used an engine with no load being put on it whatsoever and no idle speed variation. Having some sort of drive train would increase the heat from friction and the heat from combustion, due to the added fuel consumption of overcoming the external forces. The added load would also increase wear which would increase frictional heat more as the surfaces wear even more. Overall, the biggest problem with the test was having a new engine with no load put on the engine. I good way to show this in another test would be to take a lawn mower, make sure it has oil, check the internals with a bore scope, mow a lawn, check again, remove the oil, mow a lawn for the same period of time, check again and compare. I say lawn mower because it is relatively cheap and it would do the job of adding resistance, especially if your grass is tall.

@Xxthief411xx

7 жыл бұрын

FishMan72727 Eh, the system equilibrium temperature is equally a function of heat loss and heat added. Idle speed was a big factor in this test but load would not have mattered versus just RPM.

@dezertraider

7 жыл бұрын

Thank You.Great videos! Very cool...TY73s

What happens to oil without an engine?

@Kevin-19986

5 жыл бұрын

It would stay in the bottle or would flow away if ye poured it out, i guess.

@koopiaceh6754

5 жыл бұрын

It would start a war..... And america always in it

@carsonp.7009

5 жыл бұрын

It would turn back into dead dino bods

@iloilobyaheko1872

5 жыл бұрын

One and oily

@HighStar9821

5 жыл бұрын

it'll start being sentient by questioning the purpose of its existence

I work at a Nissan dealer ship, this person had their car towed in, 2016 rogue 26k miles on it. Driving down the road, heard a loud banging sound, car cut off, wont restart, opened the hood there was oil every where, had it towed to us. When was your last oil change. Never had one done. At 26k miles, with out a single oil change, the crank bearing (the one a showed in this video) seized, with the engine at higher rpms at the time, two connecting rods (the rod that connects the piston to that bearing) snapped off, and blew through the side of the engine block, leaving big holes. Probably the funniest part was when we went to remove the foam insulator under the hood because it was covered in oil, a whole bunch of metal pieces fell out :). This was not covered under warranty, for parts and labor you were looking at about $18k (almost as much as the car was worth), the owner had the car was towed away (probably to junk yard, but I'm not sure on that), and is now probably making payments on a car that they no longer have. Moral of the story CHANGE YOUR F%$KING OIL PEOPLE.

@bighoss7437

6 жыл бұрын

Kevin Weil i use synthetic so I don't have to change the oil for the life time of the vehicle

@teravolt6113

6 жыл бұрын

+Big Hoss I use my car for short distance trips so i'll reach the distance reported on the service booklet in something like 10 years and that's when i'll change the oil.

@bighoss7437

6 жыл бұрын

shadowninja81500 2 - 3 years then sell it, I don't drive more the 3000km a year and as far as I know oil doesn't go stale

@Jbiglin

5 жыл бұрын

Kevin Weil - One day I noticed my sister’s Celica GT on the side of the highway and I stopped to see what was wrong. The engine quit and was smoking a bit. Checked the oil to find the dipstick bone-dry. I asked her when she had the oil changed last and she couldn’t remember. Asked her when she last checked the oil. The answer was “The Oil light never came on”. Engine was ruined. A friends brother was a mechanic at a Toyota dealership. He somehow got it covered under warranty. Cost her a case of beer for him and the service manager. Two years later, the same freakin thing happened. I was so pissed at her.

@officialspaceman1190

5 жыл бұрын

Kevin Weil I also work at Nissan and we had a 17 Pathfinder come in with 24k miles for an oil change, pulled the plug off and nothing was coming out lol so we drop the pan and there was no oil only pure sludge so thick that the pickup tube left an indentation in the sludge. This one got lucky the motor didnt blow lol

brb draining oil from my rides

@gamerslust6533

5 жыл бұрын

😂😂😂😂😂😂😂

@rtellez19891

5 жыл бұрын

same

@JIREN972

5 жыл бұрын

Hey bruh your vids are truly awesome... the nissan build one tho

@wesley7753

3 жыл бұрын

U back yet?

@brakernight7881

3 жыл бұрын

Did it run betterer

You should repeat the test but with the engine under load. Intuition says there would be more carnage.

@aygwm

7 жыл бұрын

Good idea! A simple fluid resistance setup would be a good test, e.g. one on a bicycle trainer.

@dimmacommunication

7 жыл бұрын

Bruce Harding It's still a good test

@builder1113

7 жыл бұрын

yeah, that would definitely help! I pretty much blew up a rototiller engine like this! It worked fine for about the first 5 minutes then it slowed down and and I noticed smoke coming out of the exhaust... yep, big problem...

@Thraim.

7 жыл бұрын

That would help to destroy the engine faster but I doubt that the temperatures on the outside would be much higher.

@TerribleEngineer

7 жыл бұрын

There would be a significant difference, especially on the cylinder bore. The oil would reduce the friction and increase the heat transfer to the cylinder bore. The crank would also get worn to all hell

The residual oil on the contact surfaces held up really well and probably prevented much more serious wear and heat.

One thing you forgot to take note off is even though you drained the oil from the engine to do your second test without oil, all the engine parts would theoretically all be lubricated. Try running a completely dry engine with no oil and I bet your results would be drastically different

Oil is for lubrication obviously more than it is for cooling.

@Tr33Tr331

6 жыл бұрын

Brian Harris cooling systems

@4774sammyg

6 жыл бұрын

Brian Harris that's what she said

@voltag3man

5 жыл бұрын

Friction makes heat Oil helps take away friction...

@timer42s_83

5 жыл бұрын

Plus it’s not going to stay cold, it would obviously warm as it travels through the parts that need lubrication, that’s why the temp doesn’t look to be cooler.

@MrSidney9

5 жыл бұрын

@@4774sammyg lol

what happens if you don't change the oil at all? Not saying I don't change my oil.. but I'm curious

@renzo1382

7 жыл бұрын

Im from Argentina, so my english isent so good. If you do that, eventually the oil loses propertis, and dont lubricated so well

@dansid

7 жыл бұрын

Jonny V in becomes chocolate

@iamezza

7 жыл бұрын

It gradually turns into thick sludge that doesn't flow at all. Eventually after enough miles it's like running without any oil and the engine dies.

@5roundsrapid263

7 жыл бұрын

Renzo Asdasd Your English is actually quite good.

@jonathanvasquez283

7 жыл бұрын

iamezza other than it pretty much ruining the engine I didn't know it can kill it.. thank you

That "voids warranty" warning is pretty ironic here.

@EngineeringExplained

7 жыл бұрын

Craigslist ad: "Engine only used for 30 minutes, like new!"

@Christian4life86

6 жыл бұрын

Engineering Explained 😂😂😂

The level of honesty in this video is through the roof, love it!

The oil not only acts as a heat sink, as you mentioned, but also as an internal medium to not only cool hot surfaces, but to warm cold ones...a thermal balance goes a long ways towards preventing material stress and abrasion at sealing points (gaskets, valve seals, etc)...running with no oil, the hottest spots are probably going to be the piston's crown, the cylinder head's combustion chamber (to a lesser degree), and the exhaust valve stem/face. If oil is present, these parts will give up their excess heat and spread it to cool spots, like the finned cylinder block and intake side of the cylinder head, but without oil you are going to notice slightly cooler external temps as no heat is being transferred, but critical internal parts (particularly the piston) are building heat and have no way to transfer it away aside from direct skirt/ring contact with the cylinder wall. Eventually, the piston will fail from overheating, either by cracking or swelling enough to seize in bore, and the excess heat from combustion and friction trying to leave the only way it can, by direct contact of the rings and skirt to the cylinder wall, will lead to very rapid wear. Some of those small engines have a cast cylinder liner that isn't particularly tough, and the hardened rings will wear it away faster than the piston can seize in it. Then, with even less direct contact, the piston is going to have to melt down or crack. But the compression may get too low to keep running before that happens, all depends on the quality of the build. The bottom ends on these use ball bearings, which can roll along pretty happily with just an oil film for a long time. On a car engine, with hydrostatic bearings requiring oil pressure to keep metal off metal, no oil pressure is an almost instant disaster...but really not that big a deal for these little ones, at least in that respect.

Bet he returned it

@EngineeringExplained

7 жыл бұрын

I'm not like that!

@That_NJ_guy

7 жыл бұрын

Engineering Explained make a go kart with it. lol.

@duramax78

7 жыл бұрын

All princess auto and hf stuff is returns....lol

@philtripe

7 жыл бұрын

the engine is fine...just broken in...if you put oil in it that motor will last a long time

@AJOSHUATREE

7 жыл бұрын

I would lol

You should do it again, but with the side of the crankcase off. We could see the temps of each components.

@EngineeringExplained

7 жыл бұрын

I like that idea!

@themattenthehat

7 жыл бұрын

I'm not sure I'd be comfortable near a running engine with an open crankcase...

@LolasaurusYT

7 жыл бұрын

Safety Squints and earpluggers mean you?

@BoatChannel

7 жыл бұрын

you couldn't cuz the camshaft will come out

@Tj1056

7 жыл бұрын

lol Boat Channel don't you mean the crankshaft? But either way both of them would stay in place as they are bolted down by the cam and crank caps.

i like how this video was still posted in all of its honesty even though there was less than expected result. Scientific journals for example are now publishing "research" that have been tweeked to show a more conclusive result. Journals don't want to publish "boring" inconclusive findings. Hats off to this channel.

Always educational, always entertaining ! Thanks, Jason ! Nice job !!

I prefer canola oil in my engine its healthier

@ProFow

5 жыл бұрын

Extra Virgin Olive Oil is the way to go

@ashxxiv

5 жыл бұрын

I prefer grape seed oil or coconut oil. healthy oil healthy car! 🤗

@togimathews8323

5 жыл бұрын

I thought we all did..

@soulassassin0g

4 жыл бұрын

Sunflower oil is the way to go.

Well, you were measuring temperature on the engine casing. With oil temperature can be transfer from moving parts to engine casing. Without oil parts inside (like gears) are getting hot, but air around does not trasfer the heat to camera. So this is why engine without oil is colder (but it really isnt).

@Trident_Euclid

7 жыл бұрын

M_Kil Exactly

@EngineeringExplained

7 жыл бұрын

Sure, but no (or minimal) lubrication between the piston/rings and the cylinder wall should result in more heat, which passes directly to the fins.

@philtripe

7 жыл бұрын

no...it has cooling fins to keep cool...its doesnt even have an oil cooler and even if it did thats not what an oil cooler is for...its to keep the engine oil at optimal temperature which is about 212 degrees F ... oil is for wear protection not engine cooling

@counterfit5

7 жыл бұрын

phil tripe The one exception to your statement is an engine with oil squirters for the bottom of the pistons. Ferrari and Mahle are even using a 3D printed part on the underside of their pistons in F1 this year, to better control the piston temps.

@TheMisterQuestion

7 жыл бұрын

Normally in engine with oil inside just one of the 3 rings is lubricated, others are not, and they purpose beside keeping pressure is to transfer heat to the fins. So your analogy is not exactly correct, because with or without oil they are working in the same condition. Another thing that occured to me is, you test engine with oil, drained it, and then run without oil. Well, oil is dense, and you cannot drain engine completly. Very thin layer of oil remain on the insides of the engine. For lubricated parts the thinner, the better. Layer thick on several atoms works the best, and you need more time than 15 minutes to wipe that layer. The test would be more reasonable if you cleaned remaining oil with special thinner. It would result in metal on metal action, and fast destruction of engine.

Nice Vid, I always wondered what happened to engines without oil. It's amazing how long they can run without oil till bad things begin to happen.

At 4:24 you can see the metal got very hot due to friction by the discoloration of the metal.

@Bob_Lob_Law

3 жыл бұрын

Nice, messing up the heat treatment.

Oil performs under LOAD. You are not running your motors under load.

What happens if you use cooking oil to cool an engine? Would a sunflower seed oil engine work??

@tanker9987

7 жыл бұрын

They work for a while however go bad pretty quickly. Better than nothing if you lose all your oil on a camping trip and only have cooking oil.

@arekb5951

7 жыл бұрын

Jet Star One of car enthusiast channels in my country (Poland) did this using a 1.4 Opel Corsa, the guy was hitting redline frequently for a few hours straight and the engine worked as smooth as it was before. The conclusion was, this kind of oil will work, but it has way shorter lifespan than engine oil (it stops working as a lubricant much faster)

@ze_rubenator

7 жыл бұрын

If you have to escape from the apocalypse and have no other alternative it might work. Just make sure you use cooking oil that can withstand high temperatures, so no olive oil =D

@5roundsrapid263

7 жыл бұрын

It would work great in the fuel tank of an older diesel!

@nagarajbhat7869

7 жыл бұрын

run engine for couple of hours and remove immediately and dip potato slice,,, "instant potato chips"😍😜

I always learn a lot when I watch your videos. Thank you.

What is really interesting is at 4:21 you can see significant bluing on the crank on either side of where the connecting rod and bearing would sit. That would seem to indicate the temperatures were actually incredibly high from the bearing running dry. Neat to see how that wasn't reflected from the external view. As always, love the content, keep up the great work.

High performance premium oil from the grocery store...

What happens if you put gearbox oil in an engine, because I did it once when I was a mechanic apprentice and no one noticed.

@bigpole6715

5 жыл бұрын

Валентин Valentin 😂

@gutzu265

5 жыл бұрын

I'd imagine harsher engine wear, nothing anyone will notice till they drain the sump and get a good wiff😂

Im amazed to see the factory fresh cylinder cross hatching even after 15 minutes idling without oil

Hi Engineering Explained. I have a 2015 Acura TLX V6. If you haven't already heard, this car comes equipped with a 9 speed ZF DCT that's been heavily criticized as being very jerky in shifting gears. Honda has been quick to swap out the 9 speed ZF DCTs for the 8 speed DCT. I've read some articles and forums stating the jerkiness has something to do with the "dog" clutch gears. I'm genuinely interested to know why these transmissions came out badly designed. Would you make a video explaining this? I hope my fellow youtubers like this comment to get his attention. Thank you all.

@Christian4life86

6 жыл бұрын

Try having a 2013 Ford Focus SE, talk about bad transmission issues 😣

@tuckerhoefer254

6 жыл бұрын

Modern car transmissions are very weak

@ibrarsadaat6776

5 жыл бұрын

Get a manual. Manual transmissions have been perfected compared to auto

@Treyk901

5 жыл бұрын

I heard that some tuning out a bandaid on that transmission.. they pretty much disabled 1st gear as the fix. I’d be upset . I do love the 10 speed in my F-150 though!

This engine has splash lubrication, the forces in the engine are relatively low and the bearings don't require pressure lubrication. In an engine with pressure lubrication running under load the engine would seize within seconds or minutes, once the oil pressure would drop the bearings would dry out and overheat quickly. It's an interesting video but can't really be compared it to a car engine. If you lost oil pressure while accelerating on the road you would probably end up stranded in a cloud of smoke and possibly with bits of engine rattling around the oil sump.

@WarriorTr59

5 жыл бұрын

Aweigh@Sea splash lubrication, you mean wet sump ?

@dchawk81

4 жыл бұрын

This actually happened to me. I was driving down the road when an oil cooler line gave out and blew it all over the road. I temporarily repaired the hose, threw a little oil in it, drove it up on a trailer, and took it home to fix the hose correctly. The vehicle still runs like it has all or most of its power and everything. It just clacks under load. I'm debating whether to put it back on the road until it truly dies but I'd have to replace some brake line first.

@EliFleming

3 жыл бұрын

@@dchawk81 did you ever put it back on the road?

@dchawk81

3 жыл бұрын

@@EliFleming I ran it for like a month but then a brake line blew out. I had enough by then and scrapped it.

@EliFleming

3 жыл бұрын

@@dchawk81 thanks for the update. Pretty much toasted mine limping home with a blown cam seal but I might see if it’s got any life left in it.

My mechanic forgot to change the oil in my car in the last service it had 2 years ago. The oil was already about 2 years old. So 4 years running on terrible oil that was less than 3 litres when 4 litres I'm supposed to have. The oil filter was already broken. I'm surprised my engine survived. As soon as my new mechanic drained the oil, cleaned the pan and new filter my car burst into a new life within an hour. It felt more powerful. So oil is really important guys. You might be thinking why so long after servicing. Well the car is a second car that's not used as often. So didn't feel the need to.

@charlesvan13

7 жыл бұрын

You risk wrecking your engine running it low on oil. Might as well put a few quarts in it rather than needing a $3000 engine overhaul.

@ThexXxXxOLOxXxXx

7 жыл бұрын

You're inhuman to make such a loyal engine suffer like that, shame on you

@ALDORAFFUL

7 жыл бұрын

dosmastrify in my opinion, when the oul is very dirty and thik, the oil filter wont let it pass because it gets clogged overtime, then the pressure of the oil triyng to flow will eventually break the filtering material inside the oil filter. Maybe thats why he said it was broken.

@theninja001

7 жыл бұрын

What do you mean, "my mechanic"? It doesn't take a mechanic to change oil, it's your fault, no one else's that you ran for 4 years on the same oil lol

@DrummerBoii1411

7 жыл бұрын

theninja001 Lol, the car is rarely used, maybe it gets 1500miles a year on it.. so that's why I don't get it serviced every year so I do it every 2. I didn't know the oil wasn't changed until my new mechanic told me it most likely wasn't changed. It was also low on less than 3 litres of oil when it should be 4 litres that's probably down to leakages over the years. But I'm taking care of it more now, because I want the car to go on forever. And the reason I didn't change the oil myself is because I usually go the mechanic to get the whole lot done In 1 go, brakes, engine etc.

Well happy you an Car Throttle are mates lol, two of my fave KZreadrs right there

Great video. I love these kind of topics. I do have a request. Can you put together a comparison between filters (like purelator pure ones down to fram) and synthetic oil (amsoil down to walmart's supertech synthetic)?

Premium junk oil hehe

@5roundsrapid263

7 жыл бұрын

Detmer It's probably made by a brand name, just without all the additives. I'd use it in an emergency.

@hyperhektor7733

7 жыл бұрын

you could add additives yourself, like strawberry aroma, mustard or lube.

@Demonslayer20111

7 жыл бұрын

quite honestly if its api certified its fine. probably grade one or two though, which means conventional with no additives(grade one) or with (grade two)

@italiano0810

7 жыл бұрын

Detmer banana lube?

Time to change the *Engine Oil*

@izds

2 жыл бұрын

Lol

Look.... I am greatly impressed with your results. You are a mechanical magician!!!!

can you do this test with the same oil and then a synthetic oil to see if synthetic keeps the temp lower

Your first mistake was buying engine oil from a grocery store

@Darkcruzer23

4 жыл бұрын

walmart sells mobil 1 does that mean it sucks? lol

My 1996 Honda Civic Ex ran without oil for quite a while. The car felt sluggish and slow, but it kept going. One of the pistons had exploded and was making a terrible popcorn sound while idling. The engine blew and had to get a new one. But it did run for awhile without oil. To this day, I say Honda makes the best engines.

@thephysics9221

7 жыл бұрын

Jack Al You never checked your cars oil...?

@masterofwhorers1827

7 жыл бұрын

Or more to the point, it sounds like you kept driving the popcorn motor??? Not all noises are something you should worry about, especially at high mileage, but there are some sounds and actions a car makes that are universal for stop, CEL or not...

@Christian4life86

6 жыл бұрын

Toyota makes equally good motors. 1980 Tacoma's still out there running like a champ

@captnnormie8154

6 жыл бұрын

My mother got a Mitsubishi endeavor with 160k back in 2013 The car always made weird grinding noises but it was really speedy and never once even stalled or had an issue I never remember her changing the oil but I never said anything This week she came to visit and I was using the car with now over 200k she still never changed one thing on the car besides the battery and I decided to check the oil just out of curiosity and I was surprised to find the stick bone dry and the car wasn’t even knocking she said she never has time to check it and refuses to go to a mechanic because the car never had a problem I added some and the car already sounded so much quieter and felt new We still drive the car today and I plan to change the oil myself at some point She got a montero sport that she doesn’t treat much better but something about these motors just keeps them going All i can say is no other car brand has survived her long

very attractive and easy to understand. i have a question about engine oil. there's are many types of engine oil like mineral oil, synthetics oil and many more , can you explain the different about it and how it can be use ? thanks

Sir can you make a video on what would happen if one of your injectors (cri diesel engine) fail (i.e. leaking, clogging, etc.,)... Your videos are really educational and entertaining at the same time.

Very interesting, I would have guessed that the motor would have failed rather fast.

@EngineeringExplained

7 жыл бұрын

I thought the same!

@alienmechanic8696

7 жыл бұрын

it's probably the assembly lube, flush the crankcase with gasoline to remove the assembly lube

@DjJMOProductions

7 жыл бұрын

Engineering Explained seems that maybe that small amount of oil still inside the crankcase had quite a bit of cohesion on the bearing surfaces, and decreased friction just enough for temperatures to stay reasonable. would not have guessed that

@pingviiins

7 жыл бұрын

My guess it survived that long because there was no actual load on engine. I remember Fifth Gear drained car engine and drove around with no oil and if i remember correct it survived 8 minutes.

@TheSnivilous

7 жыл бұрын

Could also be loose tolerances decreasing friction since it's a shitty motor. I have a retarded friend who drained his oil and started his truck and had the cam seize to a bearing in less than a minute, and he didn't even drive anywhere (apparently).

"It goes against my intuition. But then again, if I knew what would happen from the start there'd be no point in doing this". Beautiful. This is precisely how humans went from banging rocks together to landing on the Moon and building supercomputers! Love it!

Loving the temperature videos!

I like how well made this video is

personally I can understand why it didn't act crazy after only a few minutes running without. for a small amount of time I'd wager the gearing and pistons would still be able to operate before they actually heat up and start grinding more. of course only for a very short period of time. I personally feel like if they both ran for say 6 hours straight, you'd see some extreme differences. then again I'm not an engineer and this is all conjecture feel free to correct me if I'm wrong

what if you use coke as oil ?

@trentryan27

7 жыл бұрын

the hydraulic press channel guy did that

@sdewey4152

7 жыл бұрын

My guess the sugar causes excessive scarring to the moving parts.

@Different-Level

6 жыл бұрын

Rick Sanchez i heard heroin works wonders

@SLISKI_JOHNNY

5 жыл бұрын

'Murica intensifies

@mtnmotoadv

5 жыл бұрын

You would need a pretty good source and it would cost a lot to fill an engine with that much cocaine

It would be interesting to record the temperature on the internal gears, from my understanding its the smaller internal metal pieces you want to keep from overheating as they could soften up and deform

Hey, i love your videos, i just watched "How To Increase Horsepower" and i was wondering if you cud make a video on how can you increase the engine RPM. Thanks and keep up the great work!

Connect it to some load, then we will see the actual results.

No external load on the engine. I bet it'd be just about destroyed with a full load (as in it can just hold peak torque rated RPM at WoT).

Thanks a lot for this one, as that topic is one of the most relevant to us motorheads. I must admit that I'm also really impressed to see how much abuse internal combustion engines can withstand without significant damage! Which makes me as a motorcyclist sleep calmer dreams while hittin' the apex knee deep on the bike... BTW, boy this was a long one 😂

It also depends on the Gas you're using. Some gas types come mixed with lubricating agents, which could keep the temps in check.

What will happened if you use sunflower oil?)

I drained the oil from my ex-wife's car and it is still running fine :(

@KellBailey

3 жыл бұрын

Her new man got a oil change the next day

A better comparison would be between an engine with oil and a separate engine without. It would be interesting to see how the wear patterns. I would have also left it running for hours, and tried to break them in per recommendations. Cool experiment!

Hey, I disassembled and reassembled that same model of engine for my Auto Tech Final.

WOW! the crankshaft must have gotten really hot, look at the tempering colors!

@EngineeringExplained

7 жыл бұрын

I believe that may be from the casting process, if you're referring to the coloring at 4:20. Not positive, as I didn't look inside initially, but I have a new crank as well and it too has the coloring.

@R1pperB

7 жыл бұрын

It is markings of the heat treatment. After casting and rough machining, the bearing surfaces are heat treated for surface hardness and then ground to final dimensions.

you seem pretty smart but I was totally put off when you held the oil bottle the wrong way there's directions on it for you to pour it correctly so it doesn't gargle but nobody seems to read it it's right on the side of the bottle. actually I think it's a drawing I don't even think you have to know how to read just look at the drawing

@phxtonash

7 жыл бұрын

Jesse LZ yeah why follow directions directions are for idiots right

Hey was wondering if you can make a video on downpipes heat wrapping?? Trying to see what the pros and cons are because I wanna order them

Hey - I really like your videos it's helped me with my knowledge of cars and engines. So I recently switched to AMSOIL and they claim they have third party testing for 40,000 km normal service and approx 23,000km drain intervals for their signature series I am curious as to what your thoughts are about this. Should I follow the oil or the manufacturer drain intervals? Also when it comes to oil, for specific products for high milage etc... What's the difference from regular oil or regular synthetic? Are you able to do a video or pm me here with your thoughts? Thank You -

Castrol did those commercials a few years ago where they claimed an engine which had casttol oil drained from it lasted longer than any other brand. Have you done any similar testing and are their claims legit?

@EngineeringExplained

7 жыл бұрын

Interesting, never heard about that! It'd be interesting to see, but ultimately not that meaningful. If one works better when it isn't drained, that would be the one you'd want to buy, regardless of how great or poorly it acted once there was barely any left.

This is a four stroke engine right? Could you do the same video with a two stroke engine please?

@kingkevin267

7 жыл бұрын

no modern day engine requires led in the gas. The led was used to lube the fuel injection system. Seeing as it was 2 stroke, it will not require led.

@Hulkehnor

7 жыл бұрын

+land otter1 your points B and C are the same thing. The higher Octane rating doesn't give the fuel more power it just increases its resistance to burning meaning the compression ratio can be higher and that is what gives more power. It also reduces the likelihood of predetonation for the same reason.

@p39483

7 жыл бұрын

Too much oil can cause carbon buildup. I had a Solo 210 that got hard to start when the decompression port clogged. This put extra wear and tear on the pull starter and I wound up replacing some of that as a result. Cleaning the port involves removing the head and exhaust and then pushing a pipe cleaner through the port from each side. This is a periodic maintenance item on that engine but running say 25:1 instead of 50:1 would clog it up in only a few hours.

@mrcobra7878

7 жыл бұрын

Tjukken33 2stroke doesn't require leaded gas. It will run on unleaded just as good mixed with oil

@kingkevin267

7 жыл бұрын

***** no it doesn't the lead was used so simply lube the fuel injectors. Seeing as all 2 strokes are carburated there is no 2 stroke engine in the world that would require lead in the gas. You can not have a fuel injected 2 stoke engine.

Great video!

Can you do a video on annual protection motor oil. Is it worth it and is it safe to use? thanks in advance!!!

my motorcycle without oil for 1 years, for the result the engine sound is so noisy

5 after...FBI : OPEN THE DOOR!

Very interesting video!!!!

Hi, what happen the engine if running without oil in 10 seconds? if there is a problem? thank you

What happens is that the engine get 72 unused clutches

I was waiting for engine to blow up... never happen.. ☹️

Cool Video though :D. I learn something new today, THANK YOU !!!

To add, at 4:21 you notice a lot of "blueing" around the connecting rod journal. A sign of high heat. The oil not only lubricates but also transfers heat away from the engine parts. Interesting video. Thanks for sharing!

Why am I here? I've nothing to do with motor mechanics!

Of all people to pour oil with the bottle the wrong way

@grelgen

7 жыл бұрын

i was also, appropriately, triggered by this.

Interesting video, thanks for sharing. Three additional key points that you might want to make to your viewers are the fact that: 1) There was some initial lubrication in the engine that was drained and run with no oil and even that small amount of oil provides decent lubrication at low RPM's under no load. 2) The Second point is that this test was performed at low RPM, would be interesting to see it at half throttle for a few minutes 3) Lastly, it would be interesting to see the same test at half throttle under full load Thanks again for a well produced video.

nice experiment! it really had me scratching my head until you opened the crank case and saw the metal flakes.

One problem I dont have a Car

@piggypiggypig1746

5 жыл бұрын

you don't need a car, just an engine without oil

please tell me can burnout be done with a front wheel drive car??? thanks in advance!!

@FzudemB

7 жыл бұрын

Mohammad Zeeshan Just pull the handbrake and dump the clutch

@tanker9987

7 жыл бұрын

Just get cheap tires and make sure you have at least 200 whp.

@ShipWreckAndHaloFan

7 жыл бұрын

You don't need that much, a 50hp econobox can do a burnout, with cheap tires.

@Makedeth

7 жыл бұрын

gear in reverse, go backwards a bit, clutch in, 1st gear, get revs and dump the clutch while the car is still going backwards, then pull the handbrake up as you are doing the burnout

@nathankennedy8704

7 жыл бұрын

I've done a burnout in a big wheel that was front wheel drive, so yes.

Great vid and congrats at being picked up by Road and Track.

Do you suggest when turning on your car to let the RPM to go down to its "normal" amount and only then start driving?

The results are right! The oil makes the engine cooler INSIDE, exhaustingthe heat from it, and the thermal camera gets the temperature from the OUTSIDE, soh the engine with more exhaustingheat looks hotter.

You're an engineering channel but you poured the oil wrong, everyone does it! Flip the bottle over and you won't have air bubbles disrupting the flow!

@QWERTY28875

6 жыл бұрын

WimsicleStranger wow so clever

@esetek

6 жыл бұрын

WimsicleStranger look at your face! Look at your face!!

How about testing or explaining what happens when you Overfill the engine oil? Im specifically thinking about Subaru and the tendency of dealers over filling at oil changes. and effects this may cause with different engine designs

Great video! Why don`t you make a video of lpg engines? How it works, temperature in combustion chamber, benefits, advices, etc

What is the bottom right box? Is it the ambient temperature? If it's so, it makes sense to me, because the environment in the right is much colder than the left, so no doubt the engine will perform differently and makes the engine with oil has higher temperatures

this guy is the best at the time to explain something who can dislike this?

Do you think the oil cools the engine when its hot and warms it up to operating temperature faster when it is cold?

Hi EE team, could you please perform the same test by using two different oils? Say like 10W30 vs 20W40/50?

Amazing video! thank you

Could you make a video about rod knock/ throwing a rod/ spinning a rod bearing? Like what causes it and why it destroys your engine?

Those 212 Predators are great.

Brilliant tutorial... !!

Cool video bro

Can you do ones on what oil additives and fuel additives actually do to your cylinders?

If the motor was under load it would have had some sort of failure quickly. Surprised to see how little damage there was though. The blueing on the crank shows there was some real heat in there though. Good vid!

What is the effect on the engine when run with load?

My 125cc 4t dirt bike locked up i had it on load a bit i warmed it up like a minute or 2 tried driving it and it was locked should i worry or not havent taken it apart pls reply

can u guide me to build a test rig for testing engine oils for my dissertation project?? A simple engine set up will do with good enough rpm around 500-600 and a loading arrangement for operation. Please respond ASAP. Thank you Da video is superb. !!

Amazing video

How did you get that engine to run without oil? If I'm correct those predator engines have a low oil sensor that doesn't let the engine run.