im using rotella full synthetic 5w-40 and my car runs well, 36,000 miles and still no smoking turbo
And about the jiffy lube remarks, i work at jiffy lube and i treat all the cars that come in like my own, i use the oil the customer wants and in no way do i rip them off, i even give them 15% off their invoice every time (even though i could get written up for that). So just because you have had a bad experience with jiffy lube doesnt mean they are all the same.

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