O.T. RTV Silicone Drying Time Query.

[redlee]

Changing the ATF fluid and filter on my vehicle, RTV silicone is recommended.
Says right on the tube let dry for 24 hours before refilling, thats fine but the question is, what do the dealers and auto shops do?
Im sure they dont let it sit for 24 hours.

[polaraligned]

For the pan gasket?. I would not use silicone. There are much better gasket sealers out there.

[MikeL46]

Polar is right. Many problems caused by RTV. When the pan is tightened excess RTV is pushed into the transmission (engine, whatever) and later a blob can migrate and block crucial oil passages.

What vehicle manufacturer recommends RTV?

Mike

[redlee]

For the pan gasket?. I would not use silicone. There are much better gasket sealers out there.

Yes Pan
Such as ?
Im using Permatex Ultra Black Gasket maker sealant.

[redlee]

Polar is right. Many problems caused by RTV. When the pan is tightened excess RTV is pushed into the transmission (engine, whatever) and later a blob can migrate and block crucial oil passages.

What vehicle manufacturer recommends RTV?

Mike

Toyota Corolla , Mazda C6 and Im sure many others.
My old Corolla came from Totota with just RTV on the oil and Trans pan.

[I make chips]

Go to a Honda motorcycle shop and get this. Works a treat. You can put the fluid back in in an hour based on my experience.
Same thing from Yamaha but it comes in a plastic tube that allows the stuff to dry out which pisses you off.

[redlee]

Go to a Honda motorcycle shop and get this. Works a treat. You can put the fluid back in in an hour based on my experience.
Same thing from Yamaha but it comes in a plastic tube that allows the stuff to dry out which pisses you off.

Thanks, but any idea what the dealers use ?

[Jim Stewart]

Thanks, but any idea what the dealers use ?

In my experience they use Hondabond, Yamabond, Suzukibond. All from Threebond and relabeled, last time I looked.

But whatever you use, do NOT use Nortonbond or BSAbond or Triumphbond. Trust me.

-js

[I make chips]

^ Oh,,, that's good. Real good!

You forgot Harleybond C. A and B leaked out of the tube so they were superseded to C.

[tom_d]

^ Oh,,, that's good. Real good!

You forgot Harleybond C. A and B leaked out of the tube so they were superseded to C.

I didn't realize Harleybond came in a tube. Thought it was only available in a rattle can...........

[gambler]

we try to use gaskets whenever we can, you probably have a chrysler product, the aftermarket has gaskets available.when we have to use rtv, we use some specially formulated for ATF. there is also one formulated for gear oil. let the rtv set up just until the squeeze out skins up, (not tacky). usually 30 minutes to an hour. then fill.

[lakeside53]

RTV of the type being discussed here does not "dry"; it cures from water moisture in the air. The "waiting" period is to allow the cure to be complete before exposure to engine fluids/heat etc.

[A.K. Boomer]

If I could get honda bond id use it --- it is very good stuff - I use permatex ultra gray - it's high body (like honda bond) not flimsy and has very good adhesion qualities,,, and last but not least it's gray ---------- who ever came up with those gawd awful florescent colors and why is beyond me, you could do a wonderful job rebuilding something or even just a valve adjustment or whatever and blow the entire job by putting that crap on an engine....

also people generally use way too much silicone,,, I kneed together with two fingers and apply to gaskets that way --- sandwiching the gasket and spreading it around thin layer but ample, not something that comes gushing out all the sides when you clamp things down.... I have no idea what some people are thinking when they reassemble stuff...

[A.K. Boomer]

Ooops - on the OP, what really matters allot is how thick you had to lay it on, no gasket on a steel pan may require some thickness - the more thickness the longer the dry time,

on thin layers lots of times it's setting up enough to run the engine by the time im reassembling everything else... and then things will go more rapid with heat, but thick as in a pan that would be experiencing fluid pressure even if just the fluid level causing the pressure --- then it's always good to wait awhile as in couple three hours or even more if cold temps... I do not wait till cure time, id never get any work done and there's no real reason for it - i do not have comebacks with oil leaks due to not waiting 24 hours...

[redlee]

Thanks all.