How to Remove Black Spots on White Car Surface?
4 Answers
Methods to remove black spots on white car surface: 1. For minor black spots, use a clean cloth dipped in alcohol or gasoline to wipe; avoid using harsh chemicals as they may damage the paint. 2. If the spots do not significantly affect the appearance, they can be left for future treatment or addressed at an auto repair shop for repainting. 3. For minor spots below the door trim, use masking tape and newspapers to cover areas above the door trim and tires, gently sand the black spots with fine sandpaper, and then spray with matching canned paint 2 to 3 times. Preventive measures to avoid black spots on car surfaces: 1. Wash the car frequently. 2. For vehicles that are rarely driven and left idle for long periods, wash them at least once a month. 3. Whenever possible, park the car in a garage or cover it with a car cover.
Last time my white car also had lots of tiny black dots, like it was sprinkled with black sesame seeds. First try using dedicated detailing clay—gently rub back and forth while rinsing with water to remove iron particle rust stains. For tar stains, use a tar remover spray, let it sit for five minutes to soften before wiping. If it's penetrated the clear coat, use scratch wax applied in circular motions—never use steel wool as it'll scratch the paint. When parking under trees, remember to use a car cover, and rinse off tree sap and bird droppings promptly. Once I got lazy and didn't wash it for two weeks, ended up needing polishing to restore it—now I wax monthly for protection.
My neighbor uncle's garage is always filled with tools. He said dealing with black spots on white cars depends on the type. Tree sap residue can be wiped clean with alcohol cotton, while deep rust spots require iron remover spray that turns purple upon reaction. For DIY solutions, prepare clay bars and lubricant, keeping the paint surface wet and gently rubbing. He warned against using scouring powder or dish soap, as alkaline substances damage car paint. Last time, his son used toothpaste and ended up causing swirl marks, finally spending 200 yuan on paint correction. For outdoor parking, try to avoid areas under air conditioner drainage or downwind of factories.
Last week while dropping off my child at school, I noticed dense black spots on the hood. The car detailing shop owner taught me a three-step treatment method. First, use a pre-wash solution to soften the stains, then rinse off loose dust with a high-pressure water gun. Second, use a clay glove in circular motions to remove tree sap and tar residues. For stubborn oxidation layers, apply a neutral cleaner with a sponge. During the demonstration, he emphasized wearing gloves as acidic contaminants can irritate skin. Finally, apply a coating agent for protection – three months later, no new black spots have appeared. Try to park indoors or in shaded areas whenever possible.
