Trevor? previously posted:
"Changed the oil in the diffs, T-case, engine, and flushed the brake system with a half-a-gallon of fluid. I'd like to change the oil in the transmission, but I read AX-15's dont fare well with GL-5 oils, and that's all I find on the local parts store shelves. Anyone have any suggestions?
Not sure what issue you might be referring with Ax15....For those of us with old yellow metal synchros, the new GL5 stuff is kind of hard on it, so I use Sta-Lube from NAPA which comes in a variety of lower/older GL ratings and is a less corrosive....They might make something that works for you. For some newer stuff, I have run what Paul has suggested in synthetic Mobil 10-30, but as its so thin, some older stuff (like 50-70 year old stuff) is designed with higher clearances and needs the thicker viscosity 90wt (or even 120wt in some cases). So, again its depends on the application, and it appears you know what you are doing...