Re: Important Information About Mobile 1 Synthetic Motor Oil For Mach 1's
that's an obvious misinformed statement since you don't own a MACH 1 because the recommended oil weight by Ford for our cars is 5w-20 not 5w-30. By going to 5w-30 why it may not hurt the engine, it will lessen performance and fuel economy and risk voiding Ford factory warranty from some dealers as it is not the recommended equipment.
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