1999 Viper RT10 Diff Oil 75w140:
For those running a diff oil other than mopar, which one of these two is better: Amsoil or Royal Purple? Those running Amsoil, did you ad a friction modifier to the oil? It doesn't say on the bottle that is has it included. The Royal Purple does state that it is for limited slip diffs. Here are the two oils I am looking at:
For those running a diff oil other than mopar, which one of these two is better: Amsoil or Royal Purple? Those running Amsoil, did you ad a friction modifier to the oil? It doesn't say on the bottle that is has it included. The Royal Purple does state that it is for limited slip diffs. Here are the two oils I am looking at:
You must be registered for see images
You must be registered for see images attach
Last edited: