Gear Lube

Spectre32

Welding Extraordinaire!
Joined
Sep 30, 2007
Messages
786
What is the recommend change out of the stock gear lube in the front and rear pumpkins? I wanted to throw synthetic in.
 
Factory fill is synthetic. 80w-90 in the front 75w-140 in the rear. Friction modifier in the rear.
 
Trucks got like 90K, is it about time to change it out? Will it matter if i change it out with another synthetic?
 
You are at the time. Valvoline Synthetic. Mobile synthetic. Anything you want. Some of them have a built in friction modifier.
 
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