A fast-acting professional strength cleaner that dissolves dirt and grease from engines and drive train components, Leaves engine sparkling clean. It is safe on most rubber and plastic parts.One thorough cleaning with 3M Foaming Engine Degreaser will make future cleanings - and future engine maintenance easier. Within minutes the engine will rinse clean without any scrubbing. No need to get hands dirty. Spray from a distance of about 8-10 inches with a heavy coat and allow it to penetrate for 3-5 minutes. Rinse with water. Repeat if necessary.