RHanna
Junior Member
I recently purchased a 2wd 2010 1500 and I'd like to change the diff fluid. According to the build sheet for my VIN I have the 3.92 with anti-spin. So the manual calls for Mopar 75w-140 and the Mopar friction modifier.
I believe there are other oil brands such as redline, Valvoline, amsoil that's just as good as the Mopar brand. My question is, do I still need to add the 4 ounces of friction modifier when most of these other brands list a friction modifier already in their synthetic oil?
I believe there are other oil brands such as redline, Valvoline, amsoil that's just as good as the Mopar brand. My question is, do I still need to add the 4 ounces of friction modifier when most of these other brands list a friction modifier already in their synthetic oil?