Grip 307 Truck Wash 20L is an economy high alkaline pressure washer additive. Although low on price this product yields excellent performance due to its caustic formulation, providing an incredibly economical solution for cleaning carbon, traffic film, general dirt and grease from a variety of surfaces. Suitable for cleaning cars, lorries, tankers, curtain sided vehicles. Ideal for use as a pressure washer additive at 1.35% dilution rate, and can also be applied with a vehicle brush and rinsed away leaving surfaces clean. Not suitable for use on aluminium and galvanised steel.