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since the first oil change its been 4.5 quarts of mobil 1 synthetic with a fram sure-grip filter(every 3,000 +/- a couple hunded miles). Also, one bottle of valvoline syn-tech fule injector cleanor every oil change. Same poop, year round. My car is stored in winters.
As far as mobil one, I have friends that do mechanic work on the side and its a fact that when u tear an engine apart thats been ran on synthetic(any brand really) with frequent changes, there is vitually NO engine wear, even at higher miles.
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