Chemical Gasket Removers ?
 

My Isuzu Rodeo transmission/adapter pans are leaking slightly.

Gaskets have close to 200K on them and all of the on/off with the pans for fluid/filter changes over the years has taken it's toll. The gaskets now need to be changed.

These gaskets are a paper/fiber type material and are literally baked on the the transmission body; not the pans. All around the outer edge of the transmission is all sort of high $$$ internal transmission parts that could easily be damaged. I don't see a scraper alone working in this situation.

On the WEB, I've seen advertisements for chemical gasket removers. Permatex, CRC; Loctite are the most common names I've seen.

Would anyone be able to recommend a product that would soften this old/hardened gasket material?

Thanks for your time.

Yeah, they work. We use Permatex at work but any brand will do the job. Get the old gasket as clean as possible, the less oil on it the better. Spray a good film on the gasket and let it sit for 15 minutes, then scrape off and reapply the remover. Do this as long as it takes to get the gasket off. If the spray lands on your hands, wash it off with soap and water immediately or it will feel like you got splattered with hot bacon grease in a few minutes. Not pleasant. If it gets in your eyes you will wish it hadn't.

We used to just scrape it off with a razor in the parts washer.

Diesel 924:

Thanks for the input.

Replaced main tranny and adapter pan gaskets on the Rodeo this weekend.

Bought a can of Permatex Gasket remover and took all of the precautions..ie..eye goggles, hand protection, etc.

In the end, it was a Lisle gasket scraper - part # 51000 that did the trick. It took off 99%.

Things seem to be leak free again......I hope.