I'm sure this has been asked before. I have a '00 Silvy Z71 4x4 1500. Can anyone tell me how much lube the front and rear diffs. hold? The new gears have broken in, (500 miles), and I'd like to drop the lube and put fresh oil in this weekend.

Thanks... V1

 

 

I put 80w-90 conventional in the front and 75W-90 synthetic in factory rears. Eaton posi's get 80W-90 conventional with LSD additive and Trutrac's get straight conventional.

 

I've got the Trutrac in the rear. Ron suggested I run mineral based oil, (non-synthetic). Trying to decide whether to run 85/90 or 140. Since the front rear is an open unit and it can use all the help it can get, I figure I'll run the 85/90 syn in it.

 

Some will say that synthetic doesn't play well with the front differential. How true it is, i don't know...