How to Deal with Yellow Stains on White Cars That Resemble Rust and Can't Be Wiped Off?
3 Answers
The solutions for yellow stains on white cars that resemble rust and can't be wiped off are as follows: 1. If the yellow stains are relatively light, you can evenly apply the car wax that comes with the car to the stains, then wipe them with a towel using a bit of force, and finally rinse with water. 2. For those with professional detailing skills, you can use 3M detailing sandpaper to sand the yellow stains, then polish them with a polishing machine and detailing polishing wax. If you lack relevant experience, you can take the car to a professional auto detailing shop to perform the above steps to remove the yellow stains. The methods to deal with scratches on the car are as follows: 1. Hairline scratches: Hairline scratches can generally be removed by polishing or applying a rubbing compound. Usually, a gentle wipe is enough to make the hairline scratches disappear. 2. Medium to deep scratches: Medium and deep scratches cannot be repaired by rubbing. For small dents not exceeding 5mm, you can fill them with putty to level the surface, then proceed with touch-up painting.
I had the same experience with my white car before. When parked under trees, those yellow spots were particularly noticeable. At first, I thought it was rust, but the auto repair shop said it was actually oxidized iron particles. You can see a purple dissolution reaction when spraying specialized iron remover on them, just wait ten minutes and rinse it off. For stubborn spots, you need to use car wash clay with lubricant and rub slowly. Regular waxing after washing can prevent this, and tree sap or bird droppings should be wiped off promptly. Some yellow spots are actually tar particles, which require tar remover. If you park in industrial areas, there's more metal dust, and if left unwashed for two weeks, it can seep into the paint.
As a DIY car owner, I tackle such issues in three steps: First, use a mild car wash soap for pre-washing to loosen surface contaminants, then employ a clay glove to gently work on the yellow-spotted areas in circular motions. If ineffective, apply an iron-removing spray containing mild acid (remember to wear gloves to protect your hands). After rinsing, inspect for remaining spots and apply spot-cleaning paste with unidirectional sponge wiping. Post-treatment, immediately apply a coating or wax layer to seal the surface. Important note: if yellow spots have become raised and spread extensively, it might indicate factory electrocoating issues requiring professional polishing.
