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mechanicalman · 09-08-2014, 04:56 PM

BTW, NEVER use RTV on a trans pan gasket or any other trans gasket unless you can make 100% sure the trans fluid will not seep onto the silicone. The trans fluid will permeate the silicone before it can set up and destroy any sealing properties it has. RTV sealer is good for filling low spots and a substitute for proper prep work. You can use it if you keep the oil away from it until it completely sets up. I've taken apart hundreds of leaky engines/transmissions to find failed silicone sealer. It might seal a little while, but if the oil gets to it before it completely cures it's an oil leak time-bomb.

Or, take the advice of someone else who has went through 4 gaskets and 2 pans and never fixed the leak and had to hire someone to fix it for him.

09-08-2014, 04:56 PM	#23
mechanicalman Registered User Join Date: Jun 2014 Location: Glendale, Arizna Posts: 1,642	Re: TH400 pan still leaking! BTW, NEVER use RTV on a trans pan gasket or any other trans gasket unless you can make 100% sure the trans fluid will not seep onto the silicone. The trans fluid will permeate the silicone before it can set up and destroy any sealing properties it has. RTV sealer is good for filling low spots and a substitute for proper prep work. You can use it if you keep the oil away from it until it completely sets up. I've taken apart hundreds of leaky engines/transmissions to find failed silicone sealer. It might seal a little while, but if the oil gets to it before it completely cures it's an oil leak time-bomb. Or, take the advice of someone else who has went through 4 gaskets and 2 pans and never fixed the leak and had to hire someone to fix it for him.