Re: Gas! Does it matter?
I'd put in premium once in a while when I misguidedly thought that it would act as an engine cleaner. Until I read a post on this very thread that gave me reason to doubt that there is any difference beyond octane rating.
But I never noticed any tangible difference above the horsepower gain I get after a thorough wash and wax. Our engines are made for 87. So the ECM will merely "adapt" to anything else.
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08 4.0 Sport 4x4
Stock
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