How to Remove White Spots from Aluminum Engine Surfaces?
1 Answers
When the surface of aluminum alloy becomes oxidized and dirty, it can be cleaned with an alkaline solution to remove the oxide film that has absorbed dirt. It is recommended to wash it with dilute hydrochloric acid. Do not soak for too long, and after washing, rinse thoroughly with clean water to ensure all areas are cleaned, and the aluminum alloy will return to a uniform color. Gently sand with sandpaper or soak in hot vinegar, but avoid soaking for too long.