Differential has 75w85 in it. Cars prior to 2015 had 75w140 in the solid axles. New cars are IRS. I doubt the thin gear oil was for nothing more than helping meet CAFE requirements. I'm about ready to change the oil to 75w110 Amsoil Severe Gear.
Does anyone here have good experience putting Severe Gear in a Ford LSD without using the Ford LSD additive?
Does anyone here have good experience putting Severe Gear in a Ford LSD without using the Ford LSD additive?