FAB-1 is a highly advanced synthetic based formula for all oil type fabric and foam air filter elements. A superior oil for stopping the passage of dirt, fine dust, water and other harmful elements into the applications intake system. Super tacky polymer and co-polymer additives attract and hold onto virtually all fine dust particles. The water-proof base resists moisture from passing through the filter. Prevents oil ?wash out? of the filter from carburetor fogging and offers the best protection for your engine, spark plugs, carburetor and air filter.