What changes have taken place in the automobile body and its parts in winter?

Because of the cold weather, vehicles are more likely to have problems in winter, which brings more trouble to the owners. Usually we say that cars need "three repairs and seven guarantees", that is, through active inspection and maintenance, some initial, potential and hidden faults can be found and eliminated. Caution is the key to driving in winter. Just like people, keep warm in winter, and cars need good maintenance in winter. Let's take a look at the precautions for using a car in winter!

First, when changing oil in winter, we must pay attention to choosing the appropriate viscosity. Different viscosity levels are suitable for different ambient temperatures. If you choose it improperly, it is easy to cause problems such as difficult or even impossible to start the automobile engine. Improper use of engine oil will increase the working resistance of the engine, aggravate the wear of mechanical parts and increase fuel consumption. Correct selection of engine oil will undoubtedly prolong the service life of the engine.

As we all know, engine oil has three functions: lubrication, cooling and cleaning. The normal flow of engine oil is an important medium to ensure the normal operation of the engine. But the realization of these functions is mainly related to the viscosity and fluidity of engine oil. The viscosity of engine oil will change with the change of temperature.

Second, the number of times vehicles freeze paint will also decrease after winter, so waxing in early winter is the best policy to keep vehicles painted. In addition, the waxed body is not easy to get wet, and it is not easy to condense and freeze in winter.

Third, tire rubber will become hard and relatively fragile in winter, and the coefficient of friction will decrease, so the tire pressure should not be too high, but it should not be too low. Low outside temperature and low tire pressure will accelerate tire aging. In winter, the working state of the whole vehicle lamps should be comprehensively checked, and the black light bulbs should be replaced as soon as possible. Check the working conditions of fog lights, brake lights and turn signals.

Fourth, the visibility is low in foggy days in winter, and there are many rear-end collisions. Therefore, whether fog lights and high-position brake lights work normally is also the guarantee of driving safety in winter. The weather is bad in winter. Wind, rain and snow are always sudden. In order to ensure that your car will not be damaged by temporary weather changes, you should pay attention to choosing the right parking space.

Finally, cars should be carefully maintained in winter, because the temperature is very low and the parts of cars are fragile. You should use it carefully to protect your car.