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Re: Valvoline synthetic 75w-140 plus Ford friction modifier?
I use royal purple but still add the ford friction modifier, does hurt for it to be in there and its cheap.
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2003 Mustang Mach 1
(Bought 11/16/2005)
Eaton Swapped @7psi
(On 10/24/15)
13.2@107 (Bone Stock Run)
2000 3.8 Mustang
Sold But Will Never Be Forgotten
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