Differential Gear Oil
Thread Starter
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Senior User
Joined: Dec 2004
Posts: 245
Likes: 1
From: Peshastin, Wa.
Differential Gear Oil
Still trying to find out what weight gear oil to use when I change the fluid in the differentials - also in the transfer case. Any info would be appreciated.
Post Fiend
Joined: Jul 2005
Posts: 14,582
Likes: 12
From: 21791
yeah if you have added power any where starting from the bumper back (looking on top of the truck), you would benefit from cooler temperatures/less friction and longer service life by upgrading to synthetic. as i change mine, it will go to synthetic. kwikkordead uses Redline 75W-140 in his, he praises it.
