[tnoice]

Just ran that test over the last month and ethanol free gas is definitely the way to go. Started with the Lexus, and it created a completely different car. Then filled the Boxster up and it slightly improved gas mileage but really got the engine running smoother with less "flat" spots. The above post is correct, if you are storing for the winter, fill the tank with as much ethanol free gas as possible. That ethanol stuff is terrible for our cars (especially older cars) and has been shoved down our throats! I drive 25 miles to the nearest Ethanol free gas station.