Gearing up to replace front and rear diff fluid. I'm just curious how much of the slip additive is required and if these fluids (like Royal Purple) which have the additive already included contain enough?
I only ask because because I read a review of Valvolines gear oil and how they experienced...
Recently had a great experience with Harold from Golden Key Express. He transported my JTRD from Gupton.
He recommended this additive called Max Mileage from Pittsburgh Power...