Quote:
Originally Posted by bagekko
I was thinking the same thing, a babied car will get same MPG on any grade gas.
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That has been my experience.
I also understand, that up to the point of detonation, regular gas produces my BTUs than premium, as the knock protection tends to reduce the available BTUs. Or something to that effect. I actually get slightly better mileage on regular than premium, but I do not drive hard, and if I do, I bump up to premium.