How to Deal with Car Scratch Rust Prevention?
2 Answers
If the rust is not severe, you can first use very fine water sandpaper dipped in water to gently sand away the rust spots, ensuring to sand in straight lines in the same direction. Another method is to use ordinary toothpaste. When you find new small scratches on the car body, gently apply the toothpaste in a circular motion over the scratched area.
I've been driving this car for over a decade and have dealt with plenty of scratches and rust prevention. If scratches aren't addressed promptly, they can easily rust. Start by cleaning—use warm water and car wash soap to thoroughly remove dirt and dust from the scratched area. Then, gently sand away any exposed rust or metal with fine sandpaper, being careful not to press too hard to avoid damaging the paint. After wiping it clean, apply a rust-resistant primer and let it dry completely before applying color paint to match the original car color. Finish with a clear coat for sealing. Make sure the environment is dry during this process—avoid doing it on rainy days, as it reduces rust prevention effectiveness. Regular car washing and waxing can help prevent scratches from rusting. If you notice any scrapes, act quickly—delaying can allow rust to spread and corrode the entire body, leading to much higher repair costs. Once, I forgot about a small scratch for a few weeks, and it ended up rusting badly, forcing me to get a professional respray that cost me an extra thousand bucks.
