For everyone commenting about their "30 year ase" test passing ability, the OEM dealership training facilities (and manufacturers that have to build vehicles to not leak during the warranty period, where they have to fix it for free) have a different opinion. ASE is not a training facility. It's a test. Like a driving test. And we all know how many morons there are on the road.... The point is.. do what you feel you need to do.. all I'm saying, is I've made a pretty good living fixing these leaks... and 85% are "repairs" that have used silicone versus the manufacturer's procedure....

@alensley1368

5 жыл бұрын

I have used gaskets sealers on about every repair until now. I just replaced the water pump on my Taurus and used blue RTV sealer and less that a week after I replace it, its spraying water everywhere. I have used black RTV sealer and don't seem to have any problem just the blue. I think I will try it this time without any sealer and pray it works. The gaskets are not expensive but I don't like to fix something but once. This is the first time I've had one fail but it it fails one time that's one time to many.

@MegaMarclar

5 жыл бұрын

@@alensley1368 there are other types of "gasket sealers" such as "permatex super 300" which is not silicone based, does not dry out, and stays malleable to 425* Here is s snippet directly from permatex websight. 10. Using a gasket maker as a dressing on a conventional gasket. This might be the most common gasketing error of all. Many mechanics will use an RTV gasket maker to hold a conventional or cut gasket in place during assembly. Some mechanics will even use the RTV gasket maker as a dressing, coating both sides of the gasket. Gasket makers are the wrong product for these applications - their formulations are too thick for use as a dressing. If you’re installing a conventional gasket, use a gasket sealant - they’re available in sprays, liquids, and tubes, with specialized formulas for a variety of applications. www.permatex.com/ten-common-gasketing-mistakes/

@alensley1368

5 жыл бұрын

@@MegaMarclar Thanks.

@andycagle8781

4 жыл бұрын

show me a GM vehicle now days that dosnt leak before the warranty is up...!..I make a great living.. fixing all that manufacturer procedure..

@AbbeyRoad69147

4 жыл бұрын

@@MegaMarclar i used permatex 80062 "high tack" with a paper gasket. Is this ok?

I have been using rtv on gaskets for 15 years as a full time mechanic and never once had a come back .

@MegaMarclar

2 жыл бұрын

Sweet. You probably smear black on everything huh?

Used rtv and similar for years, NEVER had it leak! trouble is people use rtv sealant wrong most times, put it on, just finger tighten the bolts/nuts, then after an hour torque it up! then don't re fill liquids/fluids for 24hrs, it does say on the packaging how to use it! most people put it on fill and go, it won't work! it works fine if you use it properly! 30 years ago used to use red stag plumbing compound on head gaskets when times were hard and couldn't afford a new gasket! a dad trick that worked! it does work fine if done properly!

@MegaMarclar

2 жыл бұрын

Well those processes can help, problem is in today's automotive industry no one can wait that long. It's a flat rate feast or famine world

@ernestmurdock117

2 жыл бұрын

Thanks.

@Farfetched_Boi

Жыл бұрын

Did u use the RTV with the paper gasket or just rtv? @justin ayres

I believe what happen in this case was, the client used way to much silicon..

Thank you SO much. The directions for my new Duralast water pump were very unclear and I was about to add a sealant as it basically directed me to. You saved me!

@daSTARPlayer

4 жыл бұрын

So it worked out without any leaks because I followed another KZreadr on here and they had me put it on and it leaked like NIAGRA afterwards. I'm about to go and get another one and do it this way...just wanted to know how yours held up

@MrRightNow

3 жыл бұрын

Any updates?

@Jason_556

3 ай бұрын

@@daSTARPlayeri didn’t use any RTV sealant on my 07 Buick water pump and didn’t seem to leak after 3 years my radiator blew one of its tanks. So I replace the radiator with new one and decided to go ahead and replace water pump being it’s so cheap. I pulled the pump and notice around the outer water pump shaft was rusty. So this time I went with a thin amount of gray RTV sealant . The GM directions in the water pump box recommended using it. I waited 30 mins after applying it to the gasket and waited until it stopped being tacky. Put the pump on and finger tighten the bolts. Waited two hrs and now tighten them to spec and now I’ll wait tomorrow to add fluids. Hopefully it doesn’t leak.

I just feel like if you’re going to use rtv then just use it alone. I’ve done both where I’ve had a paper gasket and rtv at the same time and it worked out fine. When you mix both together it’s just an unnecessary step and more work/money. My theory: if the surface is near perfect (not scratched or any imperfections) then use a paper gasket. If it has imperfections then use rtv to fill the gaps

@mytech6779

2 жыл бұрын

Often parts designed for a gasket need the extra spacing provided by a gasket to function as intended. Using gasket maker or other stand alone flange sealant will change clearances. Same goes the other way, using a gasket where a liquid sealant was the design parameter. There are sealers for closely machined surfaces and sealers for gap filling, sealers for high pressures (like 20,000psi), those for high flex or thermal strain, or specific chemical and temperature resistance, pre-applied verses applied at assembly. Generally the manufacturer has done some research and testing in the matter, though admittedly in the case of many consumer items like cars that research often favors the needs of the original assembly line, or possibly high volume dealer, rather than individual field repair and restoration decades later.

Hey thanks man, replacing a water pump and you answered my question.. with an example too

ok, that answers that question for me today. thanks :)

I’ve always used on paper, cork, rubber, etc. Permatex® High Tack™ Spray-A-Gasket™ Sealant. coat both sides of gasket, let sit for a bit then apply and torque to specs, works great.

@MegaMarclar

4 жыл бұрын

High tack does work for a number of applications, but not for all.

@awack_

2 жыл бұрын

@@MegaMarclar for a water pmp or Tstate High Tack is the way to go .

@MegaMarclar

2 жыл бұрын

@@awack_ it depends on the specific type of gasket. Hi tack doesn't nessasary work the best on the blue silicon Impregnated paper.

@shanec4441

2 жыл бұрын

Would Permatex Aviation sealant 80019 be similar to the spray but in brush on? I believe they are similar but one is spray and 80019 brush. Basically it’s just a thin tacky layer to aid assembly.

I performed many repairs in my 1944 WC 51 many years ago. Many of them were gasket replacement, which I did according to reprinted era manual from Portrayal Press. Excellent reproduction manuals if you ask me. Well, in those manuals you found detailed instructions about how to install or make a gasket and proper torque. I don't think back then cars were leaking oil everywhere since sealant was not invented yet. I performed the gasket replacement using the 1944 method explained in manual and they never failed. Eventually sold that vehicle and bought a newer one in which still use the practice of DONT USE SEALANT IN PAPER GASKET. I still found the same results: no leaking. I found no reason yet to change that practice since EVIDENCE tells I'm right

@MegaMarclar

7 ай бұрын

it depends on a lot of factors... 'sealant' has many types, and aviation sealer for example is great on paper gaskets. NOT RTV.

@enterBJ40

7 ай бұрын

Not questioning your experience but The thing is IF SEALANT IS NECESSARY IN PAPER GASKET...why it doesn't leak when paper gasket is used according to manuals instructions? Pure luck?

@MegaMarclar

7 ай бұрын

@@enterBJ40 follow the video in the description you'll see that there's tens of thousands of possible variations. There's a dozen different papers and 5 dozen different "sealers"... There's no blanket solution for everything. Most are marketing.

I reviewed your video it makes sense, the expansion and contraction of the two components. I just got done replacing the thermostat gasket on my 1992 Ford 5.0 V8. I used rtv and yes it leaked for the very reasons you explained in the video. This time I used gasgacinch which coats the paper gasket with a thin layer of the product, you let it dry for a few minutes before attaching the gasket to the housing, then the housing with the gasket to the intake manifold. I applied a thin layer onto the intake manifold, waited 3 minutes then carefully placed the housing on the manifol and started the bolts. Did the leak check, NO leaks!!! Thanks for posting this very important explanation, on why you don't want to use rtv.

@MegaMarclar

4 жыл бұрын

thanks for the comment. There IS a difference between 'gasket sealer' and 'rtv "gasket sealer" ' the marketing teams have allowed millions of sales in products and re-repairs. Sometimes you have to go back to the roots of the old timers, and how they did it.

@cliffordkinnear9705

4 жыл бұрын

@@MegaMarclar You are correct. I was so happy I was able to stop the leak. The rtv just let coolant leak, dribble out real slow.

@MegaMarclar

4 жыл бұрын

@@cliffordkinnear9705 I'm glad you were able to get it fixed. So many people these days think that RTV silicone is the one end all solution

@mytech6779

2 жыл бұрын

Very true, "gasket maker" does not equal "gasket sealer"(aka "gasket dressing")

@lantrick

2 жыл бұрын

IMHO, use a good gasket sealer IF anything. A spray or brushed sealer is WAY different than silicone goo.

I always put a thin layer of silicon on a paper gasket. Never had a leak. Always use good quality Loctite high temp silicon and not the cheap stuff. Not worth doing a job twice.

Used RTV on my water pump and intake manifold gaskets on my 87 Monte Carlo 23 years ago and NO LEAKS in 2021! However I do understand what your saying. It’s just the way an old timer taught me when I was a kid.

@MegaMarclar

3 жыл бұрын

There are some applications where it should be used... but not all. On the 305 they want you to use rtv around the coolant passages.

@Jason_556

3 ай бұрын

@@MegaMarclarhow about the front and back of the intake of a 305 Chevy small black? I use to always get leaks when I used the rub tabs that came with the intake gasket kits. Later GM started using nothing but silicone instead.

When the metals are similar(eg steel on steel or iron) and the heat is evened out by the enclosed environment you will not have the issue with thermal expansion, both will expand at basically the same rate putting no shear strain on the flange sealant. With aluminum against iron/steel the difference is about 6-7 ten thou per 100f; iron and steel expand ~6.5 ten thou and aluminum expands ~13 ten thou per 100f; copper alloys are between at 9-11 ten thou, titaniums are only about 5 ten thou, lead zinc tin and magnesium are 13-16 ten thou. I swear most people are at least partially illiterate, they act like reading the label, let alone TDS, will cost them a first born child. When reusing good condition paper gaskets(yes this can be appropriate for certain old timey projects.) I wilI tend to favor gasket dressings for dressing paper gaskets; These usually thicken but stay somewhat plasticly deformable(flow under force) such as high-tack, gaskacinch, or even non-hardening permatex gasket maker(No2 or aviation-3, or maybe even 300, these are great on threads). Hell I've even had good luck using Indian-head gasket shellac to cement a motorcycle valve cover in place when the o-ring based seal had gone bad and some threads were in need of an insert,(prior owner tried over tightening rather than replacing the o-ring.) now I was on the road in small town timbukto, but it held on an air cooled engine head for over a month of daily riding until I made it home ordered the o-ring and had the threads repaired. The cover and head were both cast aluminum. Shellac is soluble in straight alcohol for cleanup, but resistant to both petroleum and water. Separate from all that, there are different types of RTV for good reason, some are stiff(grey) and some are very pliable(red).

@MegaMarclar

2 жыл бұрын

Finally someone who gets it. Lol. I've been the enemy of the state since I posted this video, because everyone Is an expert that used rtv one time and had no issues.

Thanks for the info What about using OPTIMUM GREY in a thin layer on the gasket? Permatex claims it is designed for water pumps?

@MegaMarclar

5 жыл бұрын

That is up to you... personally, I never use it.

@johnlangeveld3392

11 ай бұрын

That's what I did and no leaks!

I’ve learned the hard way I never use silicone on paper gaskets anymore

I've used RTV on paper gaskets for many years...and never had any leaks. The trick I do is I wait a few days before I start the engine to give the RTV enough time to harden up.

@MegaMarclar

2 жыл бұрын

Good job, glad it worked for you. Do you have a part number for the specific paper you used?

@midos67channel24

2 жыл бұрын

@@MegaMarclar The part# on my last repair was Fel Pro TCS13417. And the RTV I used was Permatex High Heat Red.

@MegaMarclar

2 жыл бұрын

@@midos67channel24 that blue paper is silicon impregnated, doesn't require any additional sealers. This is the reason these leak down the road. Silicone will stick to any surface, except it's self. If you were going to use anything on that application it would be aviation sealer.

Thing I always wondered is why people would use the paper gasket anyways if they're using RTV. To me it feels a bit double, like putting a wheels under a wheel to move it. The only time when I used RTV was when there was no gasket to begin with. If there is one, I simply use that and it has always worked fine.

@MegaMarclar

Жыл бұрын

Yeah see that was all due to marketing from fill pro back in the '90s. Silicone everything. The thing is that you're supposed to use aviation sealer on paper gaskets, not rtV

what about a timing cover gasket that deals with both oil and coolant? what would you suggest? 2001 buick century custom 3.1l v6. i have a coolant leak from the timing cover gasket which uses the standard felpro type of paper gasket. i will be diving into this repair soon. thanks.

@MegaMarclar

5 жыл бұрын

Personally I always install them dry, just like the factory. On those there are 2 holes where coolant flows through (iirc). You could use some hi-tac to attach it to the timing cover prior to install. It allows the gasket to move as heat expands the metals. Unlike silicone where it creates a path for fluid to travel past.. Just like everything it's your preference. Consider how the factory built the engine in the interest of longevity and lasting through the warranty period. If the factory thought that it would need silicone to seal they would have put it on it.

Mine keeps leaking I have bought 2 water pump gaskets and they both were melted or worn after using them for a while, noticed it was still leaking from a bolt side, it was not leaking all around just around the bolt, does a metal gasket make any difference or just using rtv gasket maker ? It’s a 2010 camaro 3.6

@MegaMarclar

4 жыл бұрын

Use thread sealer on the bolt threads to seal the hole in the block

Is Hylomar Blue good for sealing paper gaskets? I heard recommendations on that over Permatex Black.

@MegaMarclar

2 жыл бұрын

Never use blue for anything that will contact any fluid. Blue will leak everytime guaranteed ...And it also depends on the type of paper gasket what sealer to use.. check the video in the description.

The biggest reason for RTV sealing failures is due to dirty / oily surfaces. Using ultra grey RTV on coolant system surfaces that have been thoroughly cleaned and de-greased will work perfectly every time! Additionally, I always prep the surfaces with an abrasive disk, even the new parts before cleaning.

@MegaMarclar

5 жыл бұрын

I agree the prep is the biggest part. And I often will do the same, with roughing up a smooth surface.

@MegaMarclar

Жыл бұрын

@@a.melburn I use aviation sealer on those.

My water pump came with replacement gaskets.old metal with little tiny oring kinda deal to new fibor gaskets.I also wonder about sealer can't find anything on adding sealer so I'm with you not going to use it.

I replaced my Prius water pump with no additional gasket sealant and its been running 2 years with no leaks. Ford after market water pump on Galaxy Mk3 states that you need to smear sealant on the paper gasket. What to do?

@MegaMarclar

3 жыл бұрын

Permatex aviation sealer for paper

Thanks for the info very helpful...

This may be true if you are using a high quality OEM gaskets, most people use the aftermarket gaskets that are low quality. I used the gasket supplied with the water pump, did not use any sealant and used an inch pound wrench per the service guide, a year later the gasket was leaking and it took me five hours to replace the gasket. Used Ultra Grey RTV and no leaks in over ten years.. Don't allow RTV to dry before tightening the bolts, it simply seals the paper fibers... RTV works well if used properly, easy to remove compared to adhesive products.

@grassyfieldz4578

3 жыл бұрын

When I replaced my water pump I used only the paper gasket supplied. 3 years later and still no leaks.

@TankToChest

2 жыл бұрын

High quality OEM 🤣 Yeah ok. I could buy better quality gaskets than OEM. Most OEM is trash anyway

@69butternut.

7 ай бұрын

OEM outsourced to China. We all know the quality that comes from there.

I have a question. I put RTV on the pump itself a d the the gasket no silicone in the block and when the temp gets hot its leaking bad . Is this because i did both?

my haynes manual says to use rtv on the paper gasket, now i don't know what to do .

@REDMAN298

4 жыл бұрын

I`ve never had a problem. And have done it many times.jmo

@manuelgonzalez1587

4 жыл бұрын

Just do it It could work or not It is an other ecpiriense to you

I'm up changing my water pump on my 2000 Ford Taurus for the 4th time. First time just a gasket. Fail. Second time red silicone RTV Permatex plus gasket too much my fault. Fail. Third time thin layer Permatex number 2 sealant and paper gasket, but I didn't spread it around with my finger. Fail. At 4 hours a pop this is beginning to piss me off. I figure I'm taking off the tire, spraying the area with carburetor cleaner, and sanding it all down, before reapplying and torquing to specks. The only question is do I use red RTV alone or the paper gasket with the number 2? And if I use the number 2 do I only put it on the side of the water pump? Or do I do the thin layer rubbed on both sides with my finger? The 4th time frustrations. What can I say... not even my first water pump, but this one's got me by the grapes.

@MegaMarclar

5 жыл бұрын

For starters the waterpumps never came with silicon on them from the factory, just straight gasket. I would never use red / Orange on any paper gasket. Different types of silicone are design for different applications. The orange / red stuff always leak when they come in contact with oil or coolant for the most part. If you absolutely have to use silicone I would use black or gray. But in your particular application I would start by cleaning the surface as well as possible with a wire brush, the using brake parts cleaner to remove all signs of coolant and oil. I would then use permatex high-tack. It's a spray on sticky "sealer" that allows the gasket to stick to the water pump but still allows it to move freely. Spray a thin coat onto your water pump and on to the water pump side of the paper gasket. Let it dry for a minute until it gets sticky didn't put the paper gasket on to the water pump and install it. The problem with silicone is that it's effectively a glue and doesn't allow for expansion and contraction.

@googleuser8448

5 жыл бұрын

Mgeorge: i know how you feel. Doing my 99 dodge water pump gasket for the 4th time as well. So pissed right now!

Hello, Thank you for your video. If I well understand The paper gasket is enough. So i don't add any type of isolatation material do i? How does not leak the coolant out from the water pump with paper gasket. can you explain it? thank you in advanced.

I've found most people use about 20x too much. A see thru skimming is all that's needed. Sometimes silicone helps to hold the gasket in place also if the mating surface is scratched or damaged in any way silicone has it covered. After having a water pump on a v6 mitsi leak thru the paper gasket after 7 hours of removing shit to get to it......never again shall a gasket be left unglued. I've also done a water pump on a Honda that was missing a bolt from the pump! It wasn't leaking from the seam it was buggered in the bearing but the silicone had been holding up the slack for God knows how long. There is a knack to silicone like any other product. Less than 1mm coating is all that's needed, some dudes lay it on like they would toothpaste on a brush😧

@MegaMarclar

5 жыл бұрын

People also confuse "gasket sealer" for rtv. Old school gasket sealer is not rtv. Just because they print it on the package doesnt mean that is what it is. Honda also uses O-rings which are much more forgiving with missing Fasteners than a standard paper or plastic gasket

@brotangyoust9252

5 жыл бұрын

@@MegaMarclar it seems to be no matter what tube of goo ya buy the packets all say 100% silicone somewhere on the back 🤣🤣. It's more a marketing/pricing thing I think. You can buy a small maybe 50g tube of gasket silicone for like $20 or a $5 400g tube of bathroom silicone here. They feel, look, smell and taste the same to me. I've used bathroom silicone on sumps before with no leaks even over a period of several years it's still dry. Some of the parts we get here are Chinese knockoffs and the gaskets you get with them sometimes don't even line up with the bloody bolt holes even and you have to blade a little extra out here and there. Over the years I've repaired more paper gaskets than had things leaking glued up with silicone. If ya wanna be a real prick tho go for the sikaflex rubberized bonder/sealer🤣🤣. That shit never lets go.....even for 3 screwdrivers a hammer and vicegrips😂🤣😁🤣😂

@enquire422

3 жыл бұрын

@@brotangyoust9252 Let's get Project Farm to do a test on that one!

@Jason_556

3 ай бұрын

⁠​⁠​⁠@@MegaMarclarI wish car manufacturers would only use ORings! So much nicer when assembling parts. I’ve always hated paper gaskets.

I always look at it logically. If your paper gasket needs silicon rtv then the manufacturer should use silicon gaskets. I find paper gaskets all over tractors and the only leaks are when people overfill the fluid levels. The old " if it calls for five quarts I'm putting in six quarts to be safe " people.

@MegaMarclar

2 жыл бұрын

Right. most of these 'modern' papers are silicon impregnated and cure with heat. silicon will stick to ANYTHING,... unless it is other silicon.

So I changing my thermostat can I just use silicone and no paper gasket or do I have to have the gasket??????

@MegaMarclar

5 жыл бұрын

You can use straight silicone if you want it to leak and have to do it again. My suggestion is to replace it with whatever came off of It from the factory

I've never had anything leak. You say don't use silicone. So what do you recommend?

@MegaMarclar

2 жыл бұрын

It depends on the application, there is no one size fits all solution... Check the vid description for the follow up video that talks about what to use, when

I got a water pump and it came with a paper gasket and I was thinking of getting a metal one. So are paper gaskets ok too use?

@MegaMarclar

Жыл бұрын

Depends on the application

So you just put them all dry? Unless the manual says otherwise?

@MegaMarclar

3 жыл бұрын

It depends on the application, what parent metals are used, and what fluid it seals

I used RTV on paper gaskets many times and never had a leak; I use it only to hold the gasket in place while I do the istallation if you don't use something it falls of and there is a chance of damaging the gasket.

@MegaMarclar

8 ай бұрын

depends on the type of paper. I try to use hi-tac if necessary

Think they used oil rtv instead of water rtv. Blue for water applications, and black for oil application. Also, if they did not read the instructions, they most likely did not wait for it to cure.

@MegaMarclar

5 жыл бұрын

Could be right, there are different types for different applications. But, I cant think of any gasket install instructions that recommend putting rtv on a paper gasket.

I'm replacing thermostat on my old tractor. It definitely had a paper gasket but the new thermostat came with a seal. Do you have any idea if I need to use the thermostat seal also or just the paper gasket. The old thermostat so old I can't tell if it had a seal on it.

@MegaMarclar

3 жыл бұрын

Does the thermostat have a rubber almost oring looking seal around the outside edge

@justinw123

3 жыл бұрын

@@MegaMarclar Yes sir that's the seal I'm asking about, the one that goes around the edge of the thermostat

@MegaMarclar

3 жыл бұрын

@@justinw123 it is probably an updated design and as long as you can get everything tight, and the surface is clean and does not have a ton of pitting, I would just use the rubber gasket on the thermostat itself. This is how all modern cars are all manufactured.

@justinw123

3 жыл бұрын

OK thanks for the fast reply have a good one

@MegaMarclar

3 жыл бұрын

@@justinw123 no worries you may want to contact manufacturer just to double triple make sure if you have any doubts. Remember that my advice goes just from your description and I have no idea what the actual application looks like.

Crap. I just fixed the water pump gasket on my 99 dodge again. I tried using no silicone and it lasted 6 months. I used silicone on both sides of the gasket last time and it lasted 3 years. Usually i have to replace the gasket once a year. I used permatex water pump and thermostat housing gasket maker today and after installing realized it said rtv. Permatex says its for water pumps, do you think this is right?

@MegaMarclar

5 жыл бұрын

What dodge are you working on?

@googleuser8448

5 жыл бұрын

@@MegaMarclar 1999 ram 4x4 318cid

@googleuser8448

5 жыл бұрын

Ram with a 318

@MegaMarclar

5 жыл бұрын

@@googleuser8448 that is unusual. I used to work for Dodge and we did thousands of those. Maybe try getting a set of mopar gaskets from the dealer

@googleuser8448

5 жыл бұрын

@@MegaMarclar i did notice my tensioner arm is not holding good tension at all i wonder if that could cause it or maybe the block is warped. Or if it is due to aftermarket pump? I never go with the cheap ones and i use felpro gaskets. Who knows a mopar gasket might do the trick. Thanks for the tip!!

Its scary how large some beads of silicone are applied by people, and even Permatex's own videos slap it on super thick. I dont use it on paper gaskets but have use it as a maker, I put nowhere near the amount on that others do and it seals well with not a lot of squeeze out. I tend to put on a thin bead like you see in some OEM factory videos when they're applying black sealant as gaskets.

@MegaMarclar

Жыл бұрын

Ya, it really depends on the application. Permatex is a for-profit company and they could give two craps less if it's done right or wrong As long as they're selling products.

No mechanic I've worked with, will use an untreated paper gasket. They all leak...

@MegaMarclar

6 жыл бұрын

two beer everybody has their own way of doing things. personally over the last 15 years of my career I have seen more paper gaskets fail from Silicon than any other gasket failure. I can't think of any manufacturer that recommends silicone in a paper gasket in a service manual.

@Xfacehack

3 жыл бұрын

Never had a paper gasket leak, until today! Solution? Paper gasket and a thin film covered over the hole paper gasket. Then finger thigh, currently wait it to dry. Then i probably tight it up

@Jason_556

3 ай бұрын

@@MegaMarclarare you letting it cure? I know mechanics don’t have time for that, but that’s probably why that’s happening. I’ve used paper gaskets and RTV sealer for over 25 years and I have had good luck with that combo.

I don't like RTV because it can squish out and float around in your coolant. I often find chunks when I replace radiators

@MegaMarclar

2 жыл бұрын

Absolutely. Aviation sealer is my go-to

I changed a rear differential cover and I just used the paper gasket,did I need to put on silicone or anything else on it!?.... because I didn't do that!...sorry for my ignorance but I don't know but I torqued the screws to what the manual said to torque them to.

@MegaMarclar

4 жыл бұрын

Most of the time you will be fine. They used paper gaskets for many years. A lot of modern applications actually just use straight rtv from the factory. No matter which route you go, they all leak eventually.

@Mauricio828311

4 жыл бұрын

@@MegaMarclar very much appreciated thank you.

i like using RTV with paper gaskets, it soaks into the paper and makes a silicon/rubber gasket out of paper(applied to both sides). follow the instructions, completely dry, thin coating/small beat, finger tighten, wait for however long is recommended(think an hr), then do final torque. fill with fluids after cure, generally 24hrs. i've really only used this on paper gaskets on crankcase covers on motorcycles, but it sealed so well i could run it with the bolts removed(just as a test) and needed a sledge and wood block to beat it off.... i'd say it sealed well.. (however, this was paper/rtv, literally turns a paper gasket into a modern rubber/silicone version)

@MegaMarclar

11 ай бұрын

It can work in some applications. But your assessment of "turning it into a modern rubber" gasket is not accurate. But I'm glad it worked in your situation.

@Swansen03

11 ай бұрын

@@MegaMarclar why? (obviously its not a 1:1, but it turns out pretty close)

So confused. Great video changing thermostat on 94 Wrangler have a new housing, was going to use the blue fel-co gasket. Not sure if I should any sealant. Did the valve cover with a reusable felco and didn’t use sealer and hasn’t leaked yet.

@MegaMarclar

Жыл бұрын

Blue paper has silicone impregnated into it and does not require any additional sealers. If you were going to use anything you would use a spray high-tack, or aviation sealer. See the video in the description for more information

@patrickab01

Жыл бұрын

@@MegaMarclar thanks I looked at repair manual and it’s just gasket so that’s what I’m going to do. I feel a lot of the times people have leaks on new gasket is because they do not tighten to torque specs

@MegaMarclar

Жыл бұрын

@@patrickab01 well there are about 25 different types of gasket material paper. Most of the time people have problems with it because if they use blue paper that has silicone in it and they put silicone on it they do not stick together. Suicone will stick to any surface known to man except for itself. So what that being said you have to be aware of what materials you're using and apply the sealers accordingly. The whole thing with the blue paper was that it did not need any sealers at all It was sort of a revolutionary technology designed by felpro many many years ago.

@patrickab01

Жыл бұрын

@@MegaMarclar I ended up using a felpro blue paper ,, no sealant, set to manuals torque setting. Ran it for a while got it up to temps with no leaks. Haven’t driven it yet Will see if all holds after driving it for a bit

@MegaMarclar

Жыл бұрын

@@patrickab01 those thermostat housings are famous for warping and also being pitted. If it does end up dripping a little bit I would suggest replacing the whole housing. I actually stock those here in the shop because I replaced them so frequently

I bought an GM water pump and the directions say use RTV sealant or pump will leak. So not sure about what you’re saying.

@MegaMarclar

2 ай бұрын

directions from the service manual, or from the gasket manufacturer? If its fel-pro they want rtv on everything.

MY OLD ONE DID NOT HAVE IT FROM THE FACTORY, i DID NOT PUT SEALANT ON THE NEW ONE. lol i was just having this discussion with some one that was watching put the pulley back on, commented that my shit was going to leak and I was going to have to re do it all again LOL. i don't think i will however. If they didn't have it factory, why then would you think you should seal it up? anyway. great video.

@srocks-uj2ip

5 жыл бұрын

Larry Leisuresuit Well, did it leak? I’m bet it did . Mine had some black goo from the factory. Looking for what is considered best for sealing a water pump right now to put the new one in with.

@MrRightNow

3 жыл бұрын

I put sealant on mine few years ago, no leaks. How has yours held up?

@larryleisuresuit9584

3 жыл бұрын

@@srocks-uj2ip No it has not. I'm not sure why I missed this reply, some one else just replied and I saw yours above it. 100% all good though. 94 mazda B3000 ( Ford ranger ) 4x4 manual shift with the crap 3.0L ( wish it was a 4 liter.)

@larryleisuresuit9584

3 жыл бұрын

@@MrRightNow Mine has not, It's all Good. Yours might be luck? Not enough time gone by? who knows, keep your fingers crossed though. just in case. LOL

My ford 1997 Taurus has in the shop manual using Gasket and Trim Adhesive D7AZ-1 9B508-AA (ES R-M 11 P17-A and ESE-M2G52-A and I can't find it anywhere. I'm not sure to apply it or not.

@MegaMarclar

2 жыл бұрын

the trim adhesive is what they use to hold window seals and stuff on, all it is is a sticky glue that holds the gasket in place. it has no affect on the sealing surface. you can use hi-tack, or just stick the gasket on and hold it there.

@breadman5048

2 жыл бұрын

@@MegaMarclar Thanks I ended up putting no tack, maybe a smidge of oil (I was doing a water pump) and it worked out pretty well! no leaks!!!

I’m replacing the fuel pump on a 350 engine. I’m getting a fel pro gasket for the mounting plate and the pump. Then I should not use gasket sealer on the gaskets correct? Thanks for the info

@MegaMarclar

11 ай бұрын

Depends on the type of paper the gasket is made from, You should use aviation sealer, not rtv. Unless the paper is blue then use hi-tack

@JC7318

11 ай бұрын

@@MegaMarclar Well it was blue so I didn’t use any sealer at all. Hope it doesn’t leak

@MegaMarclar

11 ай бұрын

@@JC7318 blue paper is silicone impregnated and will cure on its own with engine heat

@JC7318

11 ай бұрын

@@MegaMarclar Fuel pump installed. Long ride. No leaks !!

@MegaMarclar

11 ай бұрын

@@JC7318 good deal. A+ for doing research first instead of wandering away at leaks later. The thing about silicone is it will stick to pretty much any surface on the planet except for itself. So when you put silicone on a silicone paper gasket they always leak because there's no actual bond

Iv only ever had leaks from not using silicone

@MegaMarclar

3 жыл бұрын

That's because you didn't use the right sealant. Gotta remember that rtv at one time wasnt all over the shelfs in stores and didn't have mass marketing.

Are you suggesting to use the silicon RTV only? or if using the paper gasket, use that only ?

@MegaMarclar

3 жыл бұрын

It depends on the application but when gasket sealer is mentioned with paper gaskets they are referring to the old brown Aviation sealer not our RTV

@bkborn2109

3 жыл бұрын

MegaMarclar Thank you for your prompt response. I’m using Permatex Gasket Maker #22071 on my 85’ 5.0’s new thermostat housing. I’ve been using paper gaskets. But they keep leaking. At this point, I’m just going to try the gasket maker alone and see what happens.

@MegaMarclar

3 жыл бұрын

@@bkborn2109 is there pitting on the housing or on the intake? Also it makes a difference what side the gasket goes on.. iirc theres a machined recess on the intake where th tstat sits.. right?

@bkborn2109

3 жыл бұрын

MegaMarclar No pitting. It’s not recessed. It actually comes out.

@MegaMarclar

3 жыл бұрын

@@bkborn2109 looking at pictures online, is there a recess in the water outlet housing?

So what does he say about the OEMs nowadays using some sort of RTV or similar sealant to seal timing covers, oil pans etc? My Hyundai used RTV on the oil pan from the factory. I had to change the pan because my old man god bless him took the car to a quick lube place and they stripped the threads on the drain plug. I had to replace the pan (pan was only $20 on Amazon). Instead of RTV I made a Garloc gasket and so far so good........I decided to make a gasket only because i had the know how and the material to do it and thought why not. Guess we'll see........

@MegaMarclar

2 күн бұрын

on a precision machined surface a bead of RTV is fine, as long as its the right kind. This video was more specifically targeting those that put RTV on paper which is not designed for that application. Most modern vehicles have moved away from gaskets on hard engine parts like pans and timing covers to make them cheaper to manufacture. The biggest issue there is the people working on them use WAAAAAY too much sealer. Doesn't take much at all.

Never used rtv with paper gasket but I’ve seen so many people do that in KZread videos makes me feel like I was doing it wrong but never had a problem

@MegaMarclar

2 жыл бұрын

Yeah but they also never showed when they had to fix it a year later. Sometimes you just get lucky there's a dozen different types of paper and there's a dozen different types of sealer sometimes you accidentally get the right combination

Have you ever heard of using spray lithium grease to allow the paper gasket to be imprinted?

@MegaMarclar

5 жыл бұрын

I have heard of this being done with success. I personally have never done it myself.

First thing is Sealer and RTV and not the same thing.. Permatex High TACK is a Sealer / Tack. RTV in not to be used with most Gaskets. It is the Gasket.

@MegaMarclar

2 жыл бұрын

Hardly anyone knows that. The rtv companies have marketed it for so long people have forgotten the brown goo, or hi tack.

the right stuff. done

@MegaMarclar

2 жыл бұрын

well it depends on the application.

Thanks

I literally just got done replacing my thermostat and I used blue rtv silicone with a paper gasket. Literally still have silicone on my fingers goddammit

@lelareed824

4 жыл бұрын

🤣🤣😂😂😂😂

@waynesanders1406

3 жыл бұрын

.... it's just about time for you to be fixing that.

@therealandrewcano

3 жыл бұрын

@@waynesanders1406 🤦🏻‍♂️

@Quickfury2010

3 жыл бұрын

So you haven't put the tools away yet

@therealandrewcano

3 жыл бұрын

@@Quickfury2010 i was all out of silicone when i posted my comment

Would you recommend 80062 permatex high tack gasket sealant? I understand RTV isn't the way to go, but looking for something to hold gasket in place for assembly (for a water pump)

@MegaMarclar

2 жыл бұрын

Ya that does work. I've always used the spray version. It just really depends on what the gasket is made out of, thickness, and color of the paper

@TheWilslap

2 жыл бұрын

@@MegaMarclar Understood, not sure if it's a paper or composite gasket. Dark grey color. Local store only has the bottle stuff

@MegaMarclar

2 жыл бұрын

@@TheWilslap as long as its not blue paper you should be fine

@TheWilslap

2 жыл бұрын

Great, thanks for the replies. Guy at the part store tried to sell me some RTV to add with the paper gasket and I was skeptical. Glad I saw your video!

If you do not use RTV on a paper gasket, IT WILL LEAK! Seen it too many times. Always coat the paper gasket with a layer of RTV, by hand, that's suited for the application before installing it.

@MegaMarclar

5 жыл бұрын

Name one OEM application where it tells you to rtv a paper gasket, in the service manual.

@JohnDoe-ml8ru

5 жыл бұрын

​@@MegaMarclar You can't be serious... Pick up most paper gasket kits and they come with a small tube of RTV. It's "paper". If it comes into contact with coolant or oil, it will slowly seep thru the gasket or thru any imperfections on the mating surfaces. That's what RTV is for. Take the gasket, apply a thin coat of RTV to both sides of the gasket with the tips of your fingers. You must be new to working on cars or something. Years ago, auto makers always used RTV on the pan gaskets(back when they were cork), valve cover gaskets, thermostat gaskets, timing cover, etc.

@JohnDoe-ml8ru

5 жыл бұрын

@@MegaMarclar And if you want an example, look up a timing cover gasket kit for a SB ford. Not that crap 4.6L and newer shit. Look up one for a 289/302/351 windsor. Should come with thread sealant and RTV. I'm staring at the picture of one right now. Here's a link. www.mustangdepot.com/OnLineCatalog/Engine/timing_chain_covers.htm

@MegaMarclar

5 жыл бұрын

@@JohnDoe-ml8ru lol, well your the expert.

@dieselscience

5 жыл бұрын

NO, RTV on a _PAPER_ gasket *WILL LEAK.* Paper gaskets require shellac based SEALER, NOT RTV 'gasket maker.'

There's no need to use a sealer with a gasket. That's the whole point of the gasket. I have been in a pickle before when I could not get a gasket for my new water pump and I needed my car so I made my own gasket gasket maker. Drove it another hundred thousand miles and never had a leak. I would say use one or the other but I would much rather use a gasket alone. Sometimes if you have a car that's hard to get parts for that can be a challenge don't always have the option to wait a week for something to come in the mail

Outstanding

Been doing for 15 years, never had an issue

@MegaMarclar

2 жыл бұрын

probably because people take their vehicles elsewhere when it leaks.

Think just a dry cereal box gasket for my turbo water jacket seal will hold up? Its wet and really really HOT.

@MegaMarclar

2 жыл бұрын

I've used those for oil pumps, and high clamping force areas many times. But coolant will leech thru the paper over time, even with aviation sealer because of the 2 types of cardboard pressed together. In a pinch it would work but long term I'd get the real gasket for it

@misterbulger

2 жыл бұрын

@@MegaMarclar gaskets were discontinued like 20 years ago... what other material can I cut out? It had red RTV on there in the past... took it off because I thought it was leaking (it actually wasnt it was just the rusted coolant tube next to it). Maybe I'll go back with the red high temp RTV again... its just a pain to work with where its located. Maybe I can apply it and let it dry first? Should it go on both surfaces or just one surface? I wish I knew what kind of gasket the stock one was... isn't a thermostat gasket just cardboard? I would think it would be fine...

@MegaMarclar

2 жыл бұрын

@@misterbulger what are you working on?

@misterbulger

2 жыл бұрын

@@MegaMarclar it's a 1.0 liter 3 cyilnder Suzuki G10 block with the coveted and very rare Turbo head from 1987. Parts for this thing are completely extinct. I've had to macgyver a full rebuild for it. The coolant pipe had a hole in it so I just slid some rubber hose over it and clamped it. Fixed. Other than the leak it runs AMAZING. The turbo is cooled 3 ways: coolant, oil, and the propane that I have running thru it. It spins at about 250-300k rpm so it needs the cooling trust me lol

@MegaMarclar

2 жыл бұрын

@@misterbulgerlook up felpro #3195 it's a sheet of gasket paper for coolant. You can make your own out of ut

If silicone was recommended by the manufacturer, wouldn't they include a small tube as well as the paper gasket? I haven't seen any (in my admittedly small experience) that do.

@MegaMarclar

Жыл бұрын

Not really .. cost savings, profit margins,.. most of these problems with the gaskets come down to people just not understanding how the system works. Years and years of propaganda by companies like permatex and felpro have let people to believe that silicone is a 100% fix all solution to everything. People could not be bothered to spend 5 minutes to do research to find out what exactly they're supposed to use.

It’s all about gasket shellac for paper and Cork

@MegaMarclar

3 жыл бұрын

Exactly.. that's what they mean by "gasket sealer" not rtv

I bought a water pump for 1977 Toyota 20R engine. Got a light sort of cardboard/paper gasket. So I should NOT USE SILICONE OR SEALANT RIGHT? Install NO SILICONE..... PLEASE can U tell ..... KZread & other Auto parts stores advise differing things. Very frustrating........as a woman.

@MegaMarclar

Жыл бұрын

You would use hi-tack or aviation sealer.

@lindaleehulsey3167

Жыл бұрын

@@MegaMarclar hi-tack what brand at auto store? Is aviation at auto parts store? Use thin layer or thicker U know..... Thank U happy holidays!

@MegaMarclar

Жыл бұрын

@@lindaleehulsey3167 I would use permatex aviation sealer. It's a thick dark brown goo. It's what they would have used back then. It doesn't harden or cure like silicon does which is the major problem that people run into. It's really sticky and basically acts like Elmer's glue for the paper. I would recommend using rubber gloves when you put it on just basically paint a thin layer on each side of the paper and stick it on

@lindaleehulsey3167

Жыл бұрын

@@MegaMarclar 👌 great....3 times now believe it......on off leak here leak there. Thin or thick, Rrrrrrrrrr😤

@MegaMarclar

Жыл бұрын

@@lindaleehulsey3167 you may have more issues. Warped housing or something else. Should not have that much trouble sealing.

Okay then genius, how do i seal that flange with that comes with the RMS on those older VAG V6s? I've tried multiple gaskets, cleaned the surface spotless, tightened the bolts in the "oem" manner and it still leaks. Im going all out with silicone on this one.

@MegaMarclar

3 жыл бұрын

Not sure, never had a VAG that leaks🤣.. I would use some permatex aviation sealer, not rtv.

Can I use RTV along with a metal gasket???

@MegaMarclar

2 жыл бұрын

Does the gasket have a coating on it?

@DTUFINOPhotography

2 жыл бұрын

@@MegaMarclar It a black gasket for my VVT cover. My current one is leaking very very lightly.

@MegaMarclar

2 жыл бұрын

@@DTUFINOPhotography what year make and model is it, I can look up the gasket see what it looks like

@DTUFINOPhotography

2 жыл бұрын

@@MegaMarclar 2010 Infiniti FX35, part number is 23797-JA10B i already ordered and will install this coming week but was wondering if i needed RTV. Thanks for taking out the time to reply!

@MegaMarclar

2 жыл бұрын

@@DTUFINOPhotography okay that type of gasket is a stamped preformed seal. A lot of the times they have a very thin coating on them I'm not sure exactly what it is but those type of seals are installed dry with no other sealers. All you got to do is clean both surfaces and make sure it's torqued correctly, that's it.

I got a new idea. RTV silicone. No paper gasket. Did that on my jeep 4L because the surface wasn’t super smooth, it was kindof pitted. Hasn’t leaked yet. The right stuff

@MegaMarclar

2 жыл бұрын

It all comes down to the specific repair. In your case,. I would have used normal paper and aviation sealer, that's how we did it at the dealership.. there are multiple types of 'paper' so picking the right one is important. Sometimes that thickness makes a difference and you can't just silicone two pieces of metal together, another applications that's how you have to do it. Also there's a It doesn't different types of silicone so you got to make sure to pick the right one in that area as well.. You don't just put black our TV silicone on everything

@JacobEcret

2 жыл бұрын

@@MegaMarclar it’s silicone specially designed for applications like what I used it for.

@MegaMarclar

2 жыл бұрын

@@JacobEcret which one? And what parts did you use it on? The right stuff is just a brand, they make about 30 different products.

F&^%!!!!!! i just f-ing did this bc the damn instructions said to. the original had a rubber o-ring style seal on it, the one i bought had a fiber gasket. I thought it would be ok, but now i'm second guessing the whole thing, your expand and contract theory makes a lot of sense. i feel like i learned if you use the sealer on the fiber to just snug it down and let it cure, THEN tighten it down. guess i'll just have to buy one with the rubber seal and replace it again if it doesn't work. piss what fun!

@MegaMarclar

5 жыл бұрын

What application are you working on?

@chrisestes624

5 жыл бұрын

@@MegaMarclar replacing water pump on a 2000 Saturn sc1

@MegaMarclar

5 жыл бұрын

@@chrisestes624 looks like it's as you said, there are 2 types.. oring and paper gasket style. Think you'll be fine for a while at least.

@chrisestes624

5 жыл бұрын

@@MegaMarclar got you thanks for the reply it wasn't too awful hard to get to so if I have to redo it it'll be alright

@chrisestes624

5 жыл бұрын

Thank you for the response too

when I see silicone on an engine ....yuck

Yup, I did it wrong too

@MegaMarclar

3 жыл бұрын

What happened?

@OldSchoolNoe

3 жыл бұрын

@@MegaMarclar I used Permatex Gasket Maker on Thermostat Housing, it leaks, but just a little bit. Check out my latest video at the 5 minute mark, I show what I used.

almost certainly the gasket surface wasn't clean, didn't use a torque wrench, and didn't wait for the chemistry to finish..(ie cure time before solvents were contacted/coolant). after years of daily use, proper paper gasket+RTV made the best sealing surface possible. i've even reused a gasket and it worked perfect until i could get a new one.. could do that with just a plain paper gasket. chemistry is an exact science, but, it require patience... (wouldn't use RTV with modern silicone gaskets, aside from problem areas)

@MegaMarclar

11 ай бұрын

Your speaking in a ideal circumstance scenario. That cure time doesn't happen in the automotive industry. Paper gaskets need aviation sealers, not rtv. rtV is a marketing campaign to sell products

@Swansen03

11 ай бұрын

@@MegaMarclar "RTV" is "room temperature vulcanization" ...people are always confused when products don't work. like with paint. its all in the prep and process.

@MegaMarclar

11 ай бұрын

@@Swansen03 yeah, that's the problem. The vulcanization of the product is what causes the leaks. Different expansion rates require certain types of sealers. That's why aviation sealer was used up until the felpro and the permitax marketing campaign on rtV.

@Swansen03

11 ай бұрын

@@MegaMarclar that doesn't make any sense.. once the reaction is done, its not going 'move' very much?? unless you are torquing before its done setting adding solvents before its done curing, which everyone does.. otherwise that point you made about expansion rates makes no sense..

@MegaMarclar

11 ай бұрын

@@Swansen03 check the video in the description

For paper gaskets - use shellac based _sealer, not 'gasket maker'_ most common is 'Indian head.' For metal to metal or other non paper gaskets, READ the label. And, NO you do NOT know 'better' than the engineers who designed it.

anyone that has owned an old holden or ford would laugh at you if you didnt use sealant on the gaskets

@MegaMarclar

3 жыл бұрын

Old timers used brown goo gasket sealer. Not rtv

@bjorn1583

3 жыл бұрын

@@MegaMarclar we old timers use rtv today with no probs

I use hylomar wherever I can

@doddgarger6806

4 жыл бұрын

I was looking for mine yesterday to reseal a carb on a mower im troubleshooting It is THE best sealant hands down period Harbor freight used to sell it cheap ill have to go look

He did it wrong, ive done it many times and never leaks

Aviation gasket sealant. Never seen one leak, I have not had the chance to see one after 20 years but have never ever ever had a issue with Aviation gasket sealant. Aviation industry is done to a much higher standard than the automotive. The sealant is just tacky and doesn't harden.

@MegaMarclar

2 жыл бұрын

Everything has it's application. I prefer aviation over anything else. Check the description for the follow up video

The title is quite aggressive, I gotta say. It should be like do not put too much RTV or sth like that. I do not know other repairs you did, but in this case, the amount of RTV was clearly overkill due to lack of skills or experiences from the customer. Assuming that this is a recommendation for DIYers, they do not have proper tools or skills most of the time, so RTV would definitely help them if they use it properly. I use very little RTV to compensate for old paper gasket on the surface around dowel pins (really hard to clean to perfection). There must be a way to remove old gasket completely, but it seems not that easy when it comes to repairing old vehicles. Sometimes, it is like welded/ fused into the surface so the only option is to scrap it off. I do not put silicon everywhere, but just around dowel pins.

@MegaMarclar

4 жыл бұрын

I tend to agree. In most paper applications I typically use old school brown goop gasket sealer like permatex form-a-gasket aviation sealer #80019.

I understand your theory but I call bs.

@MegaMarclar

Жыл бұрын

Do whatever you feel is best

Instead of argueing against the use of RTV+paper gasket.... You should argue against the use of paper gaskets all together. I don't care the application. Paper gaskets fail all thr time with or with out the silicone

@MegaMarclar

3 жыл бұрын

That is a accurate statement as well. Not all modern gaskets are indeed paper some of them are some sort of hybrid composite. But since the making of this video three years ago I've been collecting clips of related failures and also suggestions on how to seal gasket surfaces properly.

@benjaminsmith4519

3 жыл бұрын

@@MegaMarclar if you don't mind me asking. What is your preference for sealing a paper gasket on a oil pan??

@MegaMarclar

3 жыл бұрын

@@benjaminsmith4519 depends on the application. I would prefer to use a rubberized style gasket. But if paper is all that is available, I would use something like permatex 80019 Aviation gasket sealer

@benjaminsmith4519

3 жыл бұрын

@@MegaMarclar my bad I meant to metal. What kind of adhesive you might use om a oil pan

@MegaMarclar

3 жыл бұрын

@@benjaminsmith4519 it really depends on the application. What exactly are you working on