Tetre-Chem TCI-503 (1 Gallon)

CI-503 H.D. is a non-etching aluminum cleaner. Non corrosive, non fuming, and biodegradable, Not for use on AlumaCleared surfaces. Directions for Use: Wet complete unit, Spray the chemical solution from a pump up sprayer directly onto the aluminum surface and have a high pressure washer ready for rinsing. Apply the TCI-503 H.D. as a spray from working your way from the bottom of a section up. Allow a 1-3 min exposure time, brushing is optional. Rinse with high pressure water (3000 psi or higher) in the same manner as application. DO NOT spray directly onto a hot metal surface. (have tip about 4″ away from surface for best results) Keep entire unit wet and move to the next section. (about a 3′ wide area at a time). Make sure you brush or have TCI-503HD completely covering the surface. A second application will also help. Heavy final rinse, top area really good.

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Its a non-etching aluminum cleaner
Its used for removing oils,road film, black welding soot, diesel fuel
Corrosive & oxidation films from polished & extruded aluminum without etching or pitting.
Its the most environmentally friendly product on the market for cleaning aluminum.