Do I need an additive in my rear differential in my dana 80

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Asked by Alexander Nov 28, 2012 at 05:46 PM about the 1997 Dodge RAM 3500 LT LB 4WD

Question type: Maintenance & Repair

I am changing the rear differential fluid on my 1997 Dodge 3500 with the 5.9 cummins diesel and a 5 speed manual  NV4500 transmission.  Do I need a Limited slip additive or anything of that sort to go in with the new fluid.  I am using 75-90w full synthetic gear oil?

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Dan answered 11 years ago

It depends i forget what the code for a LS differential is, But if you buy the additive and put it in, it wont hurt any thing. Its always better to have it and not need it, than need it and not have it.

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