How to Deal with Car Rust?
2 Answers
Car rust needs to be addressed based on its location. The methods for handling rust in different parts of the car are as follows: Car Paint Rust: Use very fine sandpaper dipped in water to gently sand away the rust. Avoid random sanding; instead, sand in straight lines in the same direction. Once completely cleaned, apply a layer of primer. For new scratches, a touch-up pen can be used directly. Car Chassis Rust: The underside of the vehicle can be treated with chassis armor or sealing to protect it from acid rain and corrosion, preventing the original protective layer from cracking or peeling. Car Brake Disc Rust: Rust can be removed by continuous braking while driving. If the rust is severe and causes noticeable vibrations in the brake pedal or steering wheel, it is necessary to have a repair shop remove the brake disc for sanding to eliminate the rust. Trunk Rust: Regularly inspect the trunk and air out the carpet frequently, or place some desiccants inside the trunk. Electrical System Rust: Regularly check the electrical system. If any wires show signs of aging, replace them promptly.
I've been driving for twenty years and rust problems are the most annoying. When dealing with rust, first check the size of the rust spots: small rust spots can be removed by yourself, just lightly sand them with coarse sandpaper until smooth, then cover with a touch-up pen. If the rust is severe and has formed holes, it needs professional treatment at a repair shop because the body structure may be damaged. Preventing rust is most important—regularly wash the car to remove salt, especially during rainy or snowy days; apply rust-proofing agent every six months, especially on the undercarriage and door seams. I always remind people not to park in damp places, and placing desiccants in the garage also helps. These small habits can reduce rust on your car, saving money and giving peace of mind. Rust is not a trivial matter—ignoring it makes repairs time-consuming and labor-intensive, affecting everything from safety to resale value.
