A liquid detergent concentrate designed to remove exhaust, road film, and bug residue from the exterior of painted vehicles (transit vehicles, cars, trucks, buses) without the use of time consuming brushing. H.D. TRANSIT CLEANER can also be used effectively with pressure cleaning equipment to clean such surfaces as aluminum siding, painted wood and painted metal. H.D. TRANSIT CLEANER works with hot or cold water rinses easily and leaves no unsightly film. Formulated for use in pressure washers and/or automated vehicle wash equipment that does or does not have mechanical brushes. Contains no harmful solvents, caustic, or acids to shorten the life of your equipment.