2003-04 Mach 1 Registry Owners Club - View Single Post - Valvoline synthetic 75w-140 plus Ford friction modifier?

TorchMach1 · 08-14-2017, 02:32 PM

I will soon be changing the gear oil in my '03. After searching on the subject, I can't seem to get a straight answer on whether or not Valvoline synthetic gear oil needs the friction modifier added. Some people says it's already included, others say to add it. Can anyone give me a definitive answer?

08-14-2017, 02:32 PM	#1
TorchMach1 Registered User Join Date: Jun 2004 Location: Cincinnati, OH Posts: 311	Valvoline synthetic 75w-140 plus Ford friction modifier? I will soon be changing the gear oil in my '03. After searching on the subject, I can't seem to get a straight answer on whether or not Valvoline synthetic gear oil needs the friction modifier added. Some people says it's already included, others say to add it. Can anyone give me a definitive answer?