What diff fluid is everyone using and what weight . I am going to do a service and want to get all my parts together .

 

Look in the owners manual. I think it is 75/90w. You will also need some friction modifier is you have the anti-spin option.

 

Thanks

 

75-90 for normal driving and 75-140 to driving and towing

You can download those Service Manuals from the links in my sig below

 

as the others have said. 75-90 up front (if you have a 4X4) and 75-140 out back. Dodge recommends synthetic. A lot of the full synthetics have the friction modifier all ready added, but you might pick up a tube just in case you are still getting chatter when you turn.

I would say the 3 most popular brands on here for diff fluids are
Royal Purple ($$$$$)
Mobile 1
Valvoline (MOPAR brand diff fluid is just relabeled Valvoline from what I have read)

nateroach