Rtv Sealant and Diffs...

SavageSS27 · **Posted:** Fri Feb 24, 2006 5:07 pm

OK, so i FINALLY started changing my diff fluid to full syn. Got the front all done, filled it up with some Mobil 1 75W-140, gonna do the back with the Mobil 1 75W-90, also synthetic...just a couple questions though, do i NEED to use red RTV 'cuz i have some blue "sensor safe" "outstanding oil resistance" stuff, and i just want to know if that will get the job done? Also, it says that it takes 1 hour to dry, and 24 hours to cure, am i safe to drive on it after an hour??? or do i need to wait 24, it's just going to be a short trip home, and then to work in the morning before the 24 hour period is over, sound safe???

Thanks,
-Savage-

the1jferg · **Posted:** Fri Feb 24, 2006 5:19 pm

I've used blue, red & black. I have blue on there now.

SavageSS27 · **Posted:** Fri Feb 24, 2006 5:24 pm

ok, so that'll work then....good...now, will it be safe to drive on in any reasonable amount of time???

the1jferg · **Posted:** Fri Feb 24, 2006 5:50 pm

about a beer and a half

SavageSS27 · **Posted:** Fri Feb 24, 2006 5:52 pm

hah...good way to measure...if i could drink that is...well...i'll give it a good amount of time to dry...thanks...

the1jferg · **Posted:** Fri Feb 24, 2006 6:14 pm

So you are either under 21, don't drink, or not in TEXAS?

Eddo · **Joined:** Thu Jul 07, 2005 7:01 pm **Posts:** 1214

I normally just use a gasket. Usually cheaper than RTV and I've tried RTV a couple of time and it always leak just a tad. Never had a problem with a gasket though.

libby · **Posted:** Fri Feb 24, 2006 6:50 pm

Chrysler uses GRAY RTV with no gasket.

Jeepjeepster · **Posted:** Sat Feb 25, 2006 12:10 am

Eddo wrote:

I normally just use a gasket. Usually cheaper than RTV and I've tried RTV a couple of time and it always leak just a tad. Never had a problem with a gasket though.

Where do you get that at eddo? Never seen one for a diff. Mine is black right now I believe.

We need to start a new thread, "Color of RTV on your diff currently".

jpzkj · **Posted:** Sat Feb 25, 2006 1:11 am

I've used

Red
Black
Copper

All worked fine..just make sure your surfaces are clean. If you let the sealent set up for about 20 minutes before putting the cover on will help keep things from being messy

Edwin · **Posted:** Sat Feb 25, 2006 6:42 am

the1jferg wrote:

about a beer and a half

I recken that's about 2 minutes for you the1jferg, ain't it.

Eddo · **Joined:** Thu Jul 07, 2005 7:01 pm **Posts:** 1214

Jeepjeepster wrote:

Eddo wrote:

I normally just use a gasket. Usually cheaper than RTV and I've tried RTV a couple of time and it always leak just a tad. Never had a problem with a gasket though.

Where do you get that at eddo? Never seen one for a diff. Mine is black right now I believe.

We need to start a new thread, "Color of RTV on your diff currently".

Here you go
http://www.partsamerica.com/ProductList ... %2C%20Rear

I always make a mess w/ the RTV and to me it is just a pain. Plus cleaning off all the old RTV when you change gear oil is even a bigger pain. Also, you can reuse the gasket in a pinch like a trail side repair if necessary. I know some people say a gasket won't work at it will always leak a little. But I've never had a problem on several diff, oil pans, valve covers, etc with just a gasket. Finally the RTV stuff always seem to start sweating gear lube after about 3 months or so. I know it's because I probably didn't apply it correctly, but after 3 meticulous attempts I gave up a went with just a gasket. Simpler, eaiser and usually a little cheaper.

the1jferg · **Posted:** Sat Feb 25, 2006 11:04 am

Oh, I meant 2 six packs Edwin. Actually, I'm a slow beer drinker. You'll see tonight. I'm wearing a helmet since I'm driving.

I think how long the RTV last depends on how well you clean it, how long you let it set, if you applied it to both surfaces first, and did you allow it to tack up before putting the cover on.

A gasket would make life more simple.

2003KJ · **Posted:** Sat Feb 25, 2006 11:34 am

I have black on mine now....color doesn't really matter. As mentioned above give it about 20 minutes to seal up before you slap the cover on and you should be good to go. I only get a couple drips or so every other night out of mine and thats cause its overfilled just a tad.

I believe the orig. color was gray if im not mistaken....usually if its red or another color, the cover's been off before.

I also prefer to use gaskets when possible, but wasn't able to locate one when I went to get the stuff to change mine.

SavageSS27 · **Posted:** Sun Feb 26, 2006 1:05 am

Hmmmm...ok, well the stuff that was on there was Red...so at least i know the oil has been changed at some point....unfortunately, i didn't know i needed to apply to both surfaces and let it set up first...but i did put some RTV around the base of each bolt...no leaks just yet, but i guess we'll see...

Jeepjeepster · **Posted:** Sun Feb 26, 2006 10:32 am

SavageSS27 wrote:

Hmmmm...ok, well the stuff that was on there was Red...so at least i know the oil has been changed at some point....unfortunately, i didn't know i needed to apply to both surfaces and let it set up first...but i did put some RTV around the base of each bolt...no leaks just yet, but i guess we'll see...

I never put it on both, I put it on the diff its self.

SavageSS27 · **Posted:** Sun Feb 26, 2006 5:32 pm

HAHA, well you see, i only put it on the cover....either way, i think i should be fine...thanks for your help fellas

KJ04 · **Posted:** Sun Feb 26, 2006 6:23 pm

I think some of the West Group are still using peanut butter on theirs. :lol:

chemguy · **Posted:** Sun Feb 26, 2006 11:17 pm

Edwin wrote:

the1jferg wrote:

about a beer and a half

I recken that's about 2 minutes for you the1jferg, ain't it.

Ha! Mr. Fergusson just looks at a beer and it's gone.

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