Registered User
One thing to consider guys is some of us get to be fortunate and get 100% gasoline while others have to settle for 90% gasoline 10% ethanol. Gas Mileage goes down with ethanol, but octane ratings go up some. Ethanol burns almost twice as much as gasoline. So add 1 or 2 mpg for us 100% gasoline deprived folks who have to settle with ethanol.