In winter, "six common sense of car maintenance" has car owners.

In winter, the "six common senses of automobile maintenance" have car owners, have they all done it?

1. Changing antifreeze The outdoor temperature is very low in winter, and many car owners park their cars outdoors. If you want to start the car normally in the morning, you must have enough antifreeze. Otherwise, the water tank will freeze easily, and the vehicle will break down. In winter, our car should not only have antifreeze, but also pay great attention to its use. Antifreeze has high requirements on brand and quality. Because the efficacy of antifreeze is mainly achieved through the chemical components contained in its substances, and these chemical components are corrosive in addition to their functions, the use of inferior or unqualified antifreeze can not meet the requirements of vehicles, and more seriously, it may cause fatal injuries to vehicles. It is important to note that antifreeze of different brands and qualities must not be mixed. Before adding antifreeze, remove the scale from the cooling system and drain the residual water, so as not to dilute the antifreeze and reduce it.

2. Change the winter oil

Automobile oil also has a name, called "winter oil and summer oil". Because of climatic reasons, the engine has different requirements for lubrication system, so it is divided into winter oil and summer oil. The lubrication requirements for automobiles in winter are higher than those in other seasons. If summer oil is used, it must be replaced. Because the temperature of the engine is equal to the ambient temperature when the car is parked normally, it is generally around 30℃ in summer, and the lowest temperature in cold winter can reach -30℃. As we all know, the normal working temperature of the engine is 80℃~ 90℃, and the period from the engine start to the engine reaching this temperature is called the cold start stage of the engine. Obviously, the cold start time of the engine in winter is much longer than that in summer. However, scientific experimental data show that 80% of automobile engine wear occurs in the cold start stage, and the wear amount is very small at normal working temperature. Therefore, the owner of ordinary lubricating oil must not forget to change the oil for his car in winter to ensure the smooth start of the engine.

3. Battery maintenance

In fact, in winter, battery maintenance is mainly based on prevention. We can check the battery regularly in advance. If there is leakage, replace the battery. If there is no leakage, use hot water to clean the oxide on the battery surface and electrode. It should be noted that many car owners will encounter difficulties in starting their cars in winter, so they will start them frequently. But the correct way should be: don't start the engine for more than 3 seconds at a time. If the first startup fails, don't rush to start again and again. From the working principle of the car, starting the motor continuously at this time will definitely cause the battery to be over-discharged and damaged. The time interval for restarting should be greater than 5 seconds. If your car is not used for a long time in winter, I suggest you take down the car battery and put it in a warmer place at home to prevent the battery from freezing and damage. If the temperature is not too low, you can unplug the battery. When the ambient temperature is below-10 degree, the discharged battery will freeze. Before charging, the frozen battery must be thawed, otherwise direct charging may cause explosion. It is best to charge slowly with a small current and pay more attention to prolonging the battery life.

4. Tire maintenance

In winter, many car owners are busy doing all kinds of maintenance for their cars. However, in many maintenance details, car owners often ignore the maintenance of tires. In fact, our car tires also need maintenance in winter. Because the rubber of the tire will become hard and brittle in winter, the friction coefficient will decrease, which requires that the tire pressure should not be too high, but not too low. The outside temperature is low and the tire pressure is too low. Soft tires will seriously accelerate aging, aggravate the contact between tires and the ground, accelerate friction and reduce tire life. Always pay attention to the tire pressure of the car. In addition, in winter, it is necessary to regularly clean up the inclusions in the tire tread, try to avoid using tires that have been mended more than once, and replace tires with larger wear and different brands and patterns. There is a great difference between the internal and external wear of tires. In order to ensure safety and reduce wear and tear, tires should be replaced regularly. At the same time, it is also one of the most direct and effective ways to maintain tires and avoid good driving habits such as too hard start, sharp turn, emergency braking and high-speed driving under bad road conditions.

5. It should not be too long to start the hot car.

In winter, most car owners think that the longer they warm up their cars, the better. With the thermal cycle, the car is easier to start, which is good for hardware such as car engine. Actually, this is not the case. I just don't know that warming up the car for too long will not only consume a lot of gasoline, but also damage the engine and greatly shorten the service life of the car. The correct way to warm up the car should be to start it within 30 seconds to 1 minute after the car starts, drive slowly, and the engine speed is around 2000, and then accelerate after the temperature returns to normal.

6. The window is frozen/&; The wiper is frozen.

In northern cities, the temperature rises to MINUS ten or twenty degrees in the morning, and it is common for windows to freeze, especially after rain and snow. At this time, many car owners like to go home and pour hot water on the window. In fact, this practice is not only easy to cause the window glass to burst, but also makes the car paint lose its luster because of the sudden change of temperature. The correct way is that if there is snow, everyone can sweep it away first. Start the car, turn on the heating system, and then wipe the car with warm water. After washing, open the door and dry the water to prevent the remaining water at the door crack from freezing. The wiper is frozen and cannot be forced to start. In winter, once the temperature is low or it rains and snows, the car will freeze easily, and the wiper on the windshield is no exception. At this time, if you start the wiper hard, it is likely to damage the wiper motor. The correct way is to start the engine first and then turn on the hot air of the air conditioner when you find that the wiper sticks to the front windshield, and the wiper will thaw soon.