Differential Lubricant
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Elder User
Joined: May 2003
Posts: 589
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From: Canastota
Differential Lubricant
What type of lubricant should I use in my rear diff?? Im not sure what type I have(8.8 or other) but I know I dont have limmited slip. Should I use reg or synthetic and what weight should I use? Would I get any kind of performance benefits from using a certian combination of oil/weight
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Postmaster
Joined: Dec 2002
Posts: 3,959
Likes: 9
From: USA
You can use either regular or synthetic, standard 90wt or one of the multi-viscosities like 80/90 or 85/145. Since you dont have a limited slip, you dont need any friction modifier in your gear oil. If you tow or operate in extreme heat, go with a heavier synthetic. If not, any gear oil will do the job.
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