Rear diff. fluid type

[Spooled-up]

I need to change the rear diff. fluid in my 2500 4x4 and was wondering what type of Amsoil to use in the rear differential. How do I know if I have a limited slip differential? Will I need to use the additive if I have the limited slip or do I even need one with the Amsoil? I don't tow anything yet, but my driving probably falls under the schedule "B" severe service intervals. Thanks.

 

[Pete Peterson]

The code for limited slip is DSA so look for that on the data tag. If you are going to use Amsoil go with the series 2000 in 75/140. you won't need to add any friction modifier with the Amsoil 75/140... ... . Pete

 

[24V-DSL]

I use Amsoil 75W-90 in my Mag-Hytec diff. cover and did not need to add any friction modifier.

 

[Spooled-up]

So I take it that I can use either grade of oil as long as they meet the GL-5 requirement in the owner's manual ( I think that's what it said... I'll have to check). Thanks for the info.

 

[Spooled-up]

MGM?

MGM,



Any advice from a certified Amsoil dealer?