Torco FFO Foam Filter Oil Spray - 13 fluid ounce is formulated with synthetic based oils and special tackifier additives. They prevent moisture and abrasive elements from passing through the foam filter and entering the engine. The FFO is easy to apply and it will not dry out, drip or run and improves air flow and it will not gum up or clog foam passages. It is for use on all foam filter elements found on motorcycles, scooters, ATVs and many other 2-stroke and 4-stroke applications.