Gear Oil
Gear Oil
Elder User
Joined: Dec 2001
Posts: 527
Likes: 0
From: Central WA USA
Mobil 1 synthetic gear oil in the weights recommended in your owners manual. I think it will be less expensive than buying Ford brand synthetic oil. You must use synthetic oil to prevent damage to the gears. Appearantly, the gears are made to use synthetic oil and are not as well made as gears of old. You might have to call a Mobil 1 dealer to get both weights oil, most auto shops only carry one weight of that oil.
Elder User
Joined: Dec 2001
Posts: 527
Likes: 0
From: Central WA USA
Front axle 75w-90, 5.8 pts Dana 60
rear axle, 75w-140 synthetic 6.9 pts for 10.5 axle
rear axle 75w-90 synthetic 8.5 Pts Dana 80
Both rear add friction modifier if you have limited slip unit.
You should have the Dana 60 in front if you have DRW F350, and dana 80 in rear.
rear axle, 75w-140 synthetic 6.9 pts for 10.5 axle
rear axle 75w-90 synthetic 8.5 Pts Dana 80
Both rear add friction modifier if you have limited slip unit.
You should have the Dana 60 in front if you have DRW F350, and dana 80 in rear.
