Finally!

[dochummer]

Ok, I've had a leak in my front diff case ever since running the Rubicon. I finally got around to fixing it. Woohoo!


Warning, for those inexperienced mechanics, like me, who are going to try it on their own - I highly recommend atleast two people and air tools if you have them. That thing is heavy!

[tomp]

What did you use to seal the leak? Mine has been to dealer twice now for a leak and it is still leaking!

[dochummer]

I don't have it in front of me, but I think it was Black RTV Sealer? That's what every person that I talked to recommended. Just put a solid bead around and then bolted everything back together....we'll see how it holds up over time.

[tomp]

My dealer just informed me that the black RTV doesn't last long on the front aluminum diffs and GM calls for this red slimey stuff that only hardens when there is no air. All of it that squirted out, never got hard and stayed wet. Never the less, it leaked when I got home.

[IRA51]

have had good luck with The Right Stuff ,just make sure all surfaces are clean and dry first .

[tomp]

Dealer states GM calls for anaerobic sealant

I have never heard of it before...

[IRA51]

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the Right Stuff? for Imports Gasket Maker
The Right Stuff for Imports Gasket Maker was specifically designed to perform under the higher torque loads caused by engines with closely spaced bolt patterns (typically import vehicles, particularly Japanese). It is is blowout resistant, allowing leakproof gaskets to be made and put into service in just one minute. Sensor-safe, this product seals instantly, forming a reliable, long lasting elastomeric rubber gasket that outperforms precut gaskets. OEM specified by Honda, Nissan and Mazda. This product is resistant to powertrain fluids (oil, coolant, and ATF) and operates in environments to 450?F (232?C) continuous; 500?F (260?C) intermittent.

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? Copyright 2006. ITW Permatex, Inc. All rights reserved. ITW Permatex and ITW Performance Polymers, Illinois Tool Works Companies.

[HUMTECH]

Anaroebic sealer is recommended for any machined surface where clearance is an issue. it will only seal in the absence of air and will not create a shimming effect. the front diff case halves need to maintain proper clearances for proper side bearing preload. If a sealant that disturbes these clearances is used you will lose the side bearing preload. As well RTV has been known to break down in the presence of synthetic lubricants.

[dochummer]

Yeah, I just talked to a GM parts friend of mine and he said that I should use the sealer next time. He said that I'll probably be find with the RTV stuff, but if I ever have to do it again, use the sealer....