Just changed the rear differential fluid on my 2007 Limited Aspen with synthetic 75W-140. Is there an easy way to determine if I need to buy Mopar Limited Slip additive. If not I'll see the dealer. Vin # IA8HW58277F522774.
Any help is appreciated. I'm planning on keeping this vehicle for another 10 years.

 

Chrysler says that you are to add 4 oz of Mopar Limited Slip additive to the rear differential. However, you don't have to buy "Mopar" brand. I picked up some of the additive from Autozone. I also changed over to synthetic fluids all around on my 08 and found no reason to pay dealer price for this additive.