Ask the Mechanic: Why is my car rusty again shortly after being repaired and painted?
Uganda, March 28 -- Recently I took my car for a repaint. Although the garage did paint work repairs on it, within two months, all areas are rusty again. What should I do?
JB
Hello JB, the rust repair may not have been repaired properly before painting the car. A rust repair paint job can fail if the kind of rust damage is not correctly identified and appropriately dealt with. There are three major types of rust; surface rust, scale rust and penetrating rust.
The three rust types have different causes, levels of penetration or damage as well as intensity or cost of repair. Surface rust is usually the result of a ding, scratch or small dents which are below the paint surface. This leaves the body panel exposed to rust formation. Surface...
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