Cougar Chemical's #1031 Truck & Trailer Wash is an excellent pressure cleaner that has powerful dirt removing ingredients that get down into cracks and crevices. #1031 Truck & Trailer Wash removes even the toughest road and street grime and scum. It has been formulated to chemically liquefy and emulsify hardened oils, greases and soiling. #1031 Truck & Trailer Wash is safe to use, it will not harm paints, dull finishes or damage rubber, aluminum, chrome, or glass. #1031 Truck & Trailer Wash is designed to dissolve instantly in any type of water, hard, soft, hot or even cold.