anyone ever used masterpro 85-140 in their diffs and transfer case? i just bought it have not put it in yet so i can return just dont wanna screw somthing up.

 

its heavy weight gear oil. how can it screw anything up? put it in run it change it every year. FOr me its like the gease discussion for out prop shafts. change it regularly. done.

 

new oil is more important then the kind. having said that I buy the high mileage oils(generally speaking) and or anything by lucas. I don't change them as often as I should. so in my fantasy world I live in I choose to believe paying too much oil somehow makes up for my procrastination.