Well, there are a couple of recommendations
Hypoid lube in the rear end. NON-hypoid lube in the trans if manual (the extreme pressure additives in hypoid lube will eventually attack brass/bronze parts like the synchro cones).
If automatic, Dexron or any other ATF except type F. That's what i use for all my
tow trucks. If automatic, Dextron ATF. Otherwise on manual trans, regular gear oil (non-Hypoid).