This video details a guy that is crazy about his MPG. I want my, I want my, I want my M P G (if you haven't seen that commercial sorry). Anyway, adding Acetone to your gas tank can potentially increase fuel efficiency by up to 30%. Also linked at the bottom is a public Wiki where people are publicly posting their own tests with their vehicles. You can even look up your car make and model and see what kind of MPG increase you can expect. Only add 1 - 3 ounces per 10 gallons - less is more!