Transmission fluid type problems

[HemiEd]

Originally Posted by El Jefe

Good post. However Lucas will not fix a front seal issue. We call Lucas liquid Gold at our shop and we have saved a lot of people money by using it. Lucas Stop Slip is a common remedy for internal seal issues. Very common in Jeeps to see a slipping symptom when the vehicle is cold, once the trans fluid heats up the seals expand due to the heat, Lucas helps revitalize those seals. Axle seals, front seals, pan gaskets, solenoid gaskets, pump seals, they will not be helped by adding Lucas. That being said, it wouldn't hurt anything putting it in there, but I just wanted to clear that up for someone who may get their hopes up.

***Also a note for any DIY'ers, if you are servicing the transmission on a vehicle do not use several types of pan gaskets ie a cork gasket and RTV, I have even seen people use a fiber pack gasket and a cork gasket with RTV in between them. On A604 transmissions we use Cork only. Some people will use RTV only, which is ok if done properly, but choose one or the other. Don't use fiber pack they are junk gaskets that seem to always leak IMO. We have a Wal-Mart down the road from us and they buy the filter kits from Advance Auto and it comes with a fiber pack, and I betcha we fix 2-3 of their services a week.

My late racing buddy, Rucker Massey was the owner of a top transmission shop, and built racing converters.
He taught me early on, just like you said, all you need is a good clean surface, a flat pan, and a cork gasket. Of course, you can't be an idiot and over tighten the pan bolts or you ruin the gasket.

Some of the older converters had a drain plug, so you could drain the fluid out of the converter when servicing the tranny. This is how they sell trans flushes now, as all of that old fluid is left in the converter by just changing the filter and fluid in the tranny.