POR-15 Cleaner Degreaser represents a revolutionary breakthrough in metal cleaners. It is non-flammable, water-based, and has no noxious odors, chlorinated solvents, or petroleum products. Cleans and degreases metal, plastic, wood, fiberglass, and painted surfaces including engines, fuel tanks and transformers. Also works well on closed systems including air conditioning, boiler tubes, compressor lines, heat exchangers and coils.