How to Remove White Spots from Aluminum Engine Surfaces?
2 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.
White spots commonly appear on aluminum engine surfaces, which may be caused by oxidation or chemical residue. I've encountered similar situations before, and they're not difficult to handle. You can try a home remedy: get a spray bottle, mix equal parts white vinegar and water, then spray it on the white spots and let it sit for about ten minutes to allow the acidic solution to dissolve the stains. Afterwards, gently wipe with a soft cloth or sponge. For stubborn spots, you can make a paste with baking soda and apply it before wiping. Remember to wear gloves to protect your skin, and rinse thoroughly with water afterwards. Make sure to completely dry the engine surface to prevent further corrosion. This method is low-cost and eco-friendly. Avoid using hard brushes or steel wool to prevent scratching the aluminum surface. Additionally, regularly check the ventilation and sealing of the engine compartment to prevent moisture buildup and recurrence, as aluminum is prone to moisture-induced oxidation. After cleaning, applying a layer of car wax can provide an extra protective layer, extending the lifespan of the aluminum components.
