Maxima Air Filter Cleaner is a ready to use, heavy-duty emulsion-type cleaner. Designed to thoroughly clean both foam and fabric air filters without damaging foam cells, paper or glue. Maxima Air Filter Cleaner will remove oil and dirt from air filter elements and easily washes out with water. For use with petroleum based oils. Rated #1 by Dirt Rider magazine. 2-Pack Contains a total of 2, 15.5 Ounce Aerosol Cans.