Quote:
Originally Posted by TheSpoils
So theoretically I can increase my mileage by 1 mpg just by filling the tank to half, 10 gallons instead of the full 20?
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Close, in theory the increase is 2.5% so .88 mpg if you get 35mpg.
Seems like a significant inconvience for a minor gain that could be gotten by other methods. (weight reduction, minor increase in tire pressure, taking public transportation occasionally)