Re: Rear Diff Fluid?

Posted by Owen_Dyneto On 2010/6/12 10:09:32

Hi John: I find the 5 gallon pails of the EP 85W-140 most convenient for me because on the 34 just the differential and trans take over 10 pints, and the rest goes quickly enough in other friend's cars. Certainly quarts are a lot easier to "squirt" in.

Simple GL-1 mineral gear oil in SAE 140 or 160 is easy enough to find, perhaps you'd consider that for your OD, though I've used the GL-5 in my 48 Custom 8 overdrive for many moons without any issues.