A co-worker told me the other night that Acetone could potentially help in improving gas mileage. Here is what he told me...everytime you fill up your gas tank, for every 10 gallons of gas, pour 10 oz of pure acetone into your tank. In doing so, this can will potentially help in gas mileage and this is a very effective method of cleaning out your fuel system. Is this true? If it is true, what are the side effects?