Keeping you Ready for the Road Ahead™, the Simoniz Alum Brite Etching Cleaner is an acidic, etching cleaning solution specifically designed to remove stains from matured aluminum surfaces, such as truck and trailer bodies. Uniformly apply this etching cleaner with low pressure, starting from the bottom and working up, then allow the cleaner to stand for 1 to 2 minutes before thoroughly pressure rinsing for a brighter appearance. FleetPride is your First Click in Heavy Duty®.