The standard QS is just an organic oil, QS does make a synthetic blend and a full synthetic, but they will label it on the bottle as such
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Seth Petro
1969 Chev Short Step
425hp 350, TH400, big tires, fast truck
1979 Pontiac Trans Am
1991 Saturn SL1 - gas mileage! (and free)
1977 Buick LeSabre - for sale
May America bless God, and may God bless America 
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