The dealership said wait until I say the maintenance reminder to take my car in for the oil change. I got a little worried at 8,500 miles with the oil life at 30% and I caved. After I received my first oil change my gas mileage jumped up to 60+ MPG. Did this happen to anyone else? Is waiting 8,500 miles + worth waiting for an oil change? Can the dealership re-tune the engine to the new 2012 specs? Are their little green men on mars?