Fred,
I don't know about 85-140 oil.?
I installed Sta-Lube Gera Oil SAE 85W90 (multipurpose Hypoid) in both transmission and transfer case but haven't driven enough to know if there are problems.? The container says it is "perfect" for transmissions requiring API/GL-3 and GL-4 requirements.? Also, the container states it is not corrosive to copper, bronze or other non-ferrous bearings and bushings.
It was expensive.
PuN.
