c9zx Well-known member 7173 Mustang Supporter Member Joined Sep 30, 2010 Messages 6,138 Reaction score 1,097 Location Mustang, OK. My Car 1972 Mach 1 Q code 2007 GT 1969 Cougar Eliminator B302 CSX 7000 Shelby Cobra FIA 2020 Edge ST 2002 F250 V10 Nov 30, 2022 #1 I ran across this today from Driven Oil. It used to be on their site but is no more. It is only a guideline. There are too many variables for anything to be considered "the gospel". Chuck
I ran across this today from Driven Oil. It used to be on their site but is no more. It is only a guideline. There are too many variables for anything to be considered "the gospel". Chuck