I read Carlos put acetone (nail polisher remover) in the tank I went from 45 to 55 mpg from the Long range Distance topic. I've been doing websurfing on this topic but there anything conclusive. Supposely you add acetone 100% 1-3oz to every 10 gallons of gas that does not contain ethanol. It's suppose to clean the fuel injection system and/or burn the gas at a higher temperature this being the reason for improved mileage. Some people say they seen none to big improvements in mileage. In Carlos case a 22% increase. Has anyone else had success doing this?