My Dad wants me to change his Differential Fluid, when I have done this on my car I have used the Red RTV Sealant, is this the stuff to use, or should I use the Black RTV Sealant.
I believe the Blue RTV Sealant is for valve covers, I have never used the Blue RTV Sealant on a Differential Cover.
I believe the Blue RTV Sealant is for valve covers, I have never used the Blue RTV Sealant on a Differential Cover.