Will the 4S shop perform internal rust prevention after sheet metal work?

1 Answers
MaryAnn
07/28/25 3:13pm
4S shops generally do not perform internal rust prevention after sheet metal work. Under normal circumstances, the protection provided by electrophoretic paint is considered sufficient, so they often skip additional protective measures. Nowadays, larger 4S shops will apply wax treatment, which involves spraying a layer of wax inside the sheet metal to compensate for any deficiencies in the electrophoretic coating. Below are some precautions to take after gasoline painting: After painting, pay attention to cleaning: Try not to use water other than soft water, including hot water, alkaline water, and water with high hardness, as these components can damage the paint. If hard water is used to clean the vehicle, it may leave marks on the paint surface after drying. Avoid exposing the car to direct sunlight: This can affect the car's paint surface and accelerate its aging. Do not use high-pressure water streams to wash the car body: If there is hard dirt on the car, it should be soaked with water first and then rinsed. Pay attention to the water flow method; use dispersed water streams for cleaning, as excessive water pressure can also damage the car's paint surface. Use detergents: If there are stubborn stains on the car body, choose detergents with different properties. If there are dead insects or other biological residues on the car body, soak them with soapy water first; then clean with a water-soaked sponge.
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