What details should I pay attention to when washing the car?

There are no strict restrictions, which have a lot to do with car habits and the environment. If it is dirty, you should wash it. Phenomenologically, cleaning should be considered if the idle speed is unstable. Under normal circumstances, the 4S shop advises the owner to clean about 20,000 kilometers. Of course, different models are different, and some throttles are easy to get dirty. If it is serious, it is not uncommon to clean it once after seven or eight thousand kilometers. Avoid washing your car in the hot sun. This will leave traces of dry water droplets on the car body, which will seriously affect the effect after car washing.

Whether the owner washes the car himself or goes to a car wash shop, he should be careful not to wash the car in the sun. Avoid cleaning with water other than soft water, including hot water, alkaline water and high hardness water. Because these substances will damage the paint surface. Cleaning with hard water will leave traces and films on the body surface after drying. 3. Avoid washing the car body with high-pressure water flow. Excessive water pressure will damage the body paint. If there is hard dust and mud on the car body, soak it in water first and then rinse it with water. The dispersed water flow is used for spraying.

Avoid adding detergent indiscriminately. Washing powder, washing powder and inferior soap are not allowed to be used during cleaning. Because these detergents contain alkali, they may wash off the grease in the car paint and accelerate the aging of the car paint. Washing cars generally does not add detergent. Avoid friction. After washing with clear water, many people like to wipe; There are two main problems in wiping: unqualified wiping cloth and incorrect wiping method. To wipe, please use a soft cloth or a soft clean sponge. Wipe gently from top to bottom along the direction of water flow, without circular motion or lateral wiping.

There may be highly corrosive stains on the car body, such as asphalt, oil stains, bird droppings, insect droppings, etc. These stains are difficult to clean and must be used correctly. When washing the car, soak it in soapy water first; Car washing can't be cleaned with gasoline, detergent and thinner. Avoid using hard cleaning tools to remove dirt. Such as plastic brushes, blades, etc., are easy to damage the paint surface. Avoid touching the body surface with dirty hands stained with oil, or putting tools stained with oil or brushes containing organic solvents on the body, which may make the paint surface fade prematurely.