What is the freezing point of washing powder water? Washing the glass with washing powder in winter leads to freezing.

The main thing is to pay attention not to wash the car when the car body is hot, not to wash the car in direct sunlight, and not to wash the car in windy weather.

If it is cold winter, don't wash your car at freezing temperature. After washing the car in winter, clean the keyhole, window, trunk gap and threshold of the car to prevent freezing, and freeze the window and door. After washing the car, it is best to drive the car out for 10 minutes, and slam on the brakes to prevent the brake disc from freezing, and at the same time, drain the residual water from the body drain pipe.

In addition, as long as you pay attention to check that the car wash sponge is clean before washing the car, there can be no sand on it. The car cleaning towel should be soft and clean, and it should not lose hair. The towel should not have sticky debris or sand. Because the composition of sand is silicon crystal, the hardness is the same as that of glass, and it is easy to scratch the car paint.

Use neutral car wash liquid or car wash wax car wash water to prevent acid and alkali from eroding car paint. (Many expensive so-called imported original car wash liquids are not neutral, and the measured alkalinity is relatively high, which is similar to washing powder, so don't be superstitious about the so-called "imported original, high price" and so on. ). Just choose some joint venture or domestic car wash liquid with good reputation.

The car washing sequence is from top to bottom. Rinse and wet the car body from the roof. Then, if your car washing machine has foam function, first add car washing liquid to foam the car and lubricate the body. Then wash the car with water mixed with car wash liquid and a car wash sponge. Then rinse it with car wash liquid. Dry the car body with a car towel.

If there is no foam function, you can dip some water mixed with car wash liquid in the car wash sponge and simply spray it on the roof and hood to increase lubrication. Then wash the car with car sponge and water mixed with car wash liquid.