Posted 12/26/2008 12:14 (#547386 - in reply to #547275) Subject: Re: Is "premium" gasoline a better purchase than regular?
Wheatley, Arkansas
Very similar to my experiences with hi-test, 1-3 mpg better. Doing the math it is usually a wash, on long trips the few extra miles might save one fuel stop if you're lucky and can "hold it" that long.