Lime scale is a common problem on car paint. It forms when lime is left on the paint and then rain or snow falls on it. The lime scales cause the paint to become dull and cloudy. There are several ways to remove lime scale from car paint. The first step is to remove any loose particles of lime scale with a vacuum cleaner. If the scale is embedded in the paint, use a wire brush to remove it. Be careful not to scratch the surface of the paint. If using a vacuum cleaner isn’t effective, try using a pressure washer with a strong stream of water. Be sure to wear protective gear, such as goggles and a long-sleeved shirt, and stay away from the windows. If using a pressure washer isn’t effective, try using an acid-based cleaner such as vinegar or lemon juice diluted with water. Be sure to test the cleaner on a small area first to make sure it doesn’t damage the paint. ..