A highly advanced synthetic based formula for all oil type fabric and foam air filter elementsStops the passage of dirt, fine dust, water and other harmful elementsSuper tacky polymer and co-polymer additives attract and hold onto virtually all fine dust particlesThe water-proof base of FAB-1 resists moisture from passing through the filterPrevents oil ?wash out? of the filter from carburetor fogging and offers the best protection for your engine, spark plugs, carburetor and air filterSpray directly onto a new or clean filter element until a uniform color is achieved on all surfaces; allow to dry for 15 minutes before installationContains no CFC?s13 oz. aerosol can