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sloFOUR

sloFOUR

Forum Member
I just into a long drawn out argument on FB about using RTV to seal mating surfaces as opposed to gaskets.

I know LT1s use it from the factory to seal the intakes, but this guy who claims to work on multimillion dollar equipment is arguing saying that RTV is not used by OEMS for anything. Weird, I just fixed a miss on a saturn that was leaking oil from the valve cover into a plug well. OEM used RTV. Went to buy the gasket and they handed me a box the size of a headgasket with a tube of RTV in it....
I guess SR20 engines have something magical to seal the oil pan because there isnt a gasket for that either. Or the thermostat housing on a Taurus that blew out 3 paper gaskets, nothing held until i used RTV (coolant rated)
Or the manifold to turbo on a dodge 2.2 turbo where a gasket was never made, nothing gets used there, it leaks if you use anything. There is no gasket made by chrysler for that, and they tell you in the FSM not to use a gasket.

I could go on for days.
 
1st!!


Lots of modern engines use it for oil pans , valve covers, and I work at Ford in trans development, and the fwd trans use it everywhere, case halves, pans (just steel pans, plastic pans have molded in gasket grooves) etc.

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dave89iroc said:
Lots of modern engines use it for oil pans , valve covers, and I work at Ford in trans development, and the fwd trans use it everywhere, case halves, pans (just steel pans, plastic pans have molded in gasket grooves) etc.

Sent from my SCH-I545
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Thank you, I said exactly that to him but he insists I am wrong.

I see your from Taylor, I lived on Jackson when I was a kid.
 
Some of my 2013 GMC Sierra's 5.3 engine looks like it has some rtv used on it. Possibly on the transfer case as well. I could be wrong though lol
 
Ben Skidmore damn dude...doesn't sound like to bad of a fix though.
2 hrs · Edited · Like

Jason Boyce No it doesn't but you still shouldn't have to fix it! You just bought the car!


Josh LaBean Won't make the trip back in current condition. The oil leak is turbo related and the trans fluid leak is RTV related. Im pretty sure there should be a gasket on that cover and not RTV.
1 hr · Like

Josh LaBean They are closed sat and sun. Hopefully ib hear back Monday. Really hope they take care of this and save their reputatuon.
1 hr · Like · 1

Ben Skidmore exactly^^^
1 hr · Like

Jake Demeter RTV is better than a gasket in most cases, you have to use the right kind and prep it properly. Why is the return leaking?
1 hr · Like

Josh LaBean The hose might have a hole it in from rubbing on the down pipe. I replaced the clamp because it wasn't doing anything. But after that it is still leaking. It could be coming out of the turbo also. Looks like its either the return line or the turbo itself.
1 hr · Edited · Like

Jake Demeter If its a section of rubber hose I would replace it and all the clamps. Just make sure you clean everything up so the hose will seal. And if you can use 2 clamps. I just went thru this with my trans cooler lines.
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Josh LaBean I don't have the time today to dive into it any more. Work at 4.
1 hr · Like

Josh LaBean Monday I can look into it more and see what's what.
1 hr · Like

Jake Demeter But you shouldn't have these issues already, you just got it.
1 hr · Like

Josh LaBean Ikr. If they make this right I'll forgive the issue. If not. It could be bad for their reputatuon.
1 hr · Like

Jason Boyce Smh if rtv was better than gaskets, for one why is it leaking, for two why do they even make gaskets? I really hope they take care of it. Doesn't that fall under the lemon law? Or is that just for new vehicles?
1 hr · Like

Jake Demeter They make gaskets for things that dont have one from the factory. Its leaking because the surface needs to be prepped and the right RTV needs to be used. I have never had an issue with proper RTV use to seal anything.And most transmissions are sealed with guess what? RTV.
1 hr · Edited · Like

Jason Boyce Most transmissions are not sealed with rtv, I'm not sure where you're getting your information from. Don't be me wrong I do use rtv but for the most part gaskets DON'T LEAK. I've prepped surfaces right before and used rtv and it has still leaked. Rtv...See More
1 hr · Like

Brandon Boyce Should be a cheap easy fix if they don't want to, but it still sucks. I wouldn't go back after this though..
1 hr · Like · 1

Jake Demeter Head gaskets and sealing cases on a trans are two different things.
1 hr · Like

Jason Boyce But I thought you could replace gaskets with rtv?
1 hr · Edited · Like

Jason Boyce I'm going to go ahead and assume that you also think that higher octane fuels make your car go faster.
1 hr · Like · 1

Brandon Boyce Popcorn is in the microwave.
1 hr · Like · 3

Josh LaBean I heard that Brandon. The cover should be easy. If I can't fix it I know a guy who could probably do it (Tony) And the oil leak could possibly cost a new turbo.. The car only has 77k on it. These problems aren't high mileage issues. They are installer errors or defective parts..
1 hr · Like · 2

Jake Demeter I never said every gasket is useless. There are cases where OEMS dont use gaskets but the aftermarket produces them. LT1s intakes are sealed via RTV. SR20 oil pans are factory sealed with RTV. DOHC saturns VC gasket is all RTV. The waterpump in my 7.3L...See More
1 hr · Like

Jason Boyce If the surface isn't machined flat you have issues. Apparently you know nothing of Lt1' s gm has used gaskets on virtually everything for years. If an engine has a machined surface, they make a gasket for it. All the rtv is for is to fill in tiny pits ...See More
1 hr · Like

Jake Demeter http://ls1tech.com/.../960831-rtv-intake-manifold.html

RTV for intake manifold? - LS1TECH
ls1tech.com
so i just want to get confirmation from someone on here that the blue "sensor safe" RTV is ok for sealing the intake.
1 hr · Like · Remove Preview

Jake Demeter http://www.turbododge.com/.../391137-exhaust-manifold...

exhaust manifold to turbo gasket? - Turbo Dodge Forums : Turbo Dodge Forum for Turbo Mopars,...
www.turbododge.com
I just recently bought a pretty clean 1989 caravan turbo with a 2.5l turbo with a blown HG and when i took it apart i didnt notice a gasket between
1 hr · Like · Remove Preview

Jake Demeter http://www.chevytalk.org/fusionbb/showtopic.php?tid/253754/

Dex-cool® Coolant Ruins Gaskets??? - ChevyTalk --The Social Network for Chevy Fans
www.chevytalk.org
Chevrolet Message Forums offering FREE technical assistance for your restoration...See More
1 hr · Like · Remove Preview

Jake Demeter DEX cool ate the gaskets, it wasnt the gaskets fault they failed, the coolant would turn acidic and eat them.
59 mins · Like

Jake Demeter But its ok, I dont know what I am talking about, thats fine.
59 mins · Like

Jason Boyce Ok for one you are posting factual shit from forums. There idiots out there who use rtv to replace gaskets. I like to call these people uneducated. The nonsense you keep posting is the reason the term "ricers" exist. You think what you will but you are...See More
56 mins · Like

Jake Demeter http://www.summitracing.com/parts/fel-1284/overview/

Fel-Pro Performance Intake Manifold Gasket Sets 1284
www.summitracing.com
Find Fel-Pro Performance Intake Manifold Gasket Sets 1284 and get Free Shipping ...See More
50 mins · Like · Remove Preview

Jake Demeter Oh whats that, a tube of RTV. Your a fucking moron and I am not wasting anymore time.
50 mins · Like

Jason Boyce They also made a replacement gasket for the gm intakes that were resistant to the dexcool. I know the dexcool ate the gaskets. It is acidic and therefore ate said gaskets. Hence the early recalls. Also why they went back to a more eco friendly coolant ...See More
50 mins · Like

Jason Boyce You don't have to waste your time Jake im not the fucking moron who puts rtv on everything. I told you its intended use. They give you a small tube not a fucking caulk gun of it. Do yourself a favor and educate yourself and read a little bit instead of sitting at home in your moms basement playing forza or gran turismo
48 mins · Like

Don Middleton Ummmm.. Lt1s use intake gaskets... I'm kind of a lt1 pro... You use rtv at the front and rear but the mating surface between the head and intake uses a gasket. Gaskets always seal better than rtv...
41 mins · Like · 1

Jason Boyce ^^has two lt1 cars..
30 mins · Like
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That was the FB convo, left names in, because I dont care.
 
they dont call it RTV but they use it mercedes even uses it, The OEM mercedes stuff 003989982010 is the shit but its 24.00 a tube
 
Yeah, granted, it's not your cheap blue stuff from the corner parts store, Ford transmissions use locktite 5999 flange sealant, but it's a room temperature Vulcunizing silicone sealant

Sent from my SCH-I545
 
sloFOUR said:
We all know there are diff types of it, but in general its all referred to as "RTV"
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And that is usually the disconnect of product name and purpose. Rather call it 'automotive sealant' than RTV. Use the wrong "RTV" for a surface and it can become an expensive repair fast.
 
Beigg said:
And that is usually the disconnect of product name and purpose. Rather call it 'automotive sealant' than RTV. Use the wrong "RTV" for a surface and it can become an expensive repair fast.
Click to expand...

Anyone who can read should be able to pick up a tube and look it to figure out if they are using the right kind though. Doing a thermostat, use coolant rated rtv, doing a VC, use oil rated RTV, etc etc.

But anyway, you guys are just reaffirming that I am right. This was all over a Protege that had an oil leak from the trans, where a cover was installed. It was RTVed but its leaking. Most likely improper formula or there was oil that never was cleaned off. Or maybe the shop that fixed it didnt let it cure. But it wasnt leaking just because it was RTVed is the point I was making.
 
sloFOUR said:
. It was RTVed but its leaking. Most likely improper formula or there was oil that never was cleaned off. Or maybe the shop that fixed it didnt let it cure. But it wasnt leaking just because it was RTVed is the point I was making.
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Id lay odds it wasnt torqued properly Oil and trans pans torque in Inch Lbs most people crank them way to tight
 
Dave89iroc mentioned Loctite 5999. That and 5900 are used EXTENSIVELY in Ford applications.
The new 6.7L diesel was released in 2010 with press-in-place gaskets on the upper oil pan to block, and lower oil pan to upper. BOTH these critical joints have converted to RTV.

Back in the day, our race engines used gaskets for the heads, intake, carb, and valve covers. EVERYTHING else was RTV. Racers get really upset about oil leaks.

All that being said, you have to do your surface prep right or pay a heavy price...
 
OldbutNew said:
Dave89iroc mentioned Loctite 5999. That and 5900 are used EXTENSIVELY in Ford applications.
The new 6.7L diesel was released in 2010 with press-in-place gaskets on the upper oil pan to block, and lower oil pan to upper. BOTH these critical joints have converted to RTV.

Back in the day, our race engines used gaskets for the heads, intake, carb, and valve covers. EVERYTHING else was RTV. Racers get really upset about oil leaks.

All that being said, you have to do your surface prep right or pay a heavy price...
Click to expand...

I forgot about 5900, we have that too, I only really deal with transmissions, so only use 5999

Sent from my SCH-I545
 
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