Metal Pre-Clean - All Metals Icluding Stainless Steel - Gallon RefillAluminum isn&';t just tough to say, it&';s tough to clean too. Make the job easy with this corrosion killing organic formula. One spray then polish away with Aluminum Pre-Clean!Organic Salt formula. Non-flammable. Safer than traditional acids. Instantly removes heavily-encrusted corrosion, rust, calcium, lime, tarnish, grease, oil & water stains. Unmatched for its performance on aluminum (will not dull or haze aluminum), it is also safe for use on painted & fiberglass surfaces. Dot Classifications: Non Regulated.Safe On: Glass Aluminum Fiberglass Stainless Steel Painted & Enamel finishes Tile Brass Copper Acrylics Plastic Perfect for Use On: Fuel Tanks Mag Wheels Alcoa Wheels Diamond Plate Framing Step Plate Engine Parts Rusted Steel Car Wash Bays and Walls Snowmobile Tunnels Fiberglass Boats Outboard Engines Outdrives Water-Stained Windows Concrete Equipment & Trucks Not For: Chrome, marble, some granite, Jura, Travertine or TerrazzoWARNING: This product can expose you to chemicals including Methanol which is known to the State of California to cause reproductive harm, and 1, 4-Dioxane which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.