Antifreeze? ? The first point I believe many people know. Antifreeze is an important component to ensure the working state of the engine. Modern family cars are almost all water-cooled engines, and antifreeze as cooling liquid is the basis to ensure the normal work of a car. The precautions for antifreeze in winter are the same as usual-ensure that the liquid level is between the maximum and minimum scale lines in the state of completely cold car, but also pay attention to the antifreeze label you add. The antifreeze in the market is generally-15? -20? -25 indicates the lowest freezing point grade, so leave some redundancy according to the lowest temperature in your area. For example, the lowest temperature in your area is MINUS 5 degrees, so it is no problem to choose antifreeze with freezing point of MINUS 20 degrees in your area. The purpose of redundancy is to prevent the once-in-a-century cold wave from cooling. Another point is that even if the freezing point of antifreeze is nominal, when it approaches its freezing point, the antifreeze itself will reduce its fluidity and form an ice-water mixture.
Changing antifreeze is also an extremely important part. Generally, the service life of antifreeze is two years, and it must be replaced after expiration. The most standard replacement method is to empty the old liquid in the car, pour enough pure water and start the car to idle for ten minutes, then put it all away. Never use mineral water or even tap water here. Wahaha and Watsons in the supermarket are recommended here. Both brands of pure water are high in purity, enough to clean the water tank of your car. ) and then add new antifreeze, so that the newly added antifreeze can exert its maximum effect.
Tires? This is also an important part of driving safety. Due to the characteristics of air expansion and contraction, the tire pressure in winter is generally lower than that in summer. Tire inspection not only includes whether the daily pattern is complete and has a certain depth, whether the tire wall is intact, whether there are cracks and bulges, but more importantly, the detection of tire pressure. All family cars will have the tire pressure value recommended by the manufacturer when testing the door or fuel tank cover, and many models will also give several recommended tire pressure values with different specifications according to the original tire size. We should also pay attention to inflating tires when traveling long distances from warm regions to cold regions. Too low or too high tire pressure will damage tires and endanger driving safety. In areas with perennial snow in winter, you can also change into snow tires suitable for winter snow and ice ground to ensure driving grip. However, the use of snow tires must pay attention to several aspects. Snow tires are silicone rubber tires, which are different from ordinary rubber tires. They also have good flexibility at low temperature, but at the same time, snow tires are softer and easier to wear than ordinary rubber tires. On non-snowy roads, such as paved asphalt roads without snow, remember not to drive at high speed, otherwise the tires will wear out very quickly.
Wiper? The importance of wiper system is common sense in areas with snowfall, but car owners in southern areas with less snowfall may rarely know what to pay attention to. First, if the windshield wipers parked on snowy days fall on the glass, snowflakes turn into water and then condense into ice, which is easy to stick to the glass. The prevention method is simple, that is, separate the wiper from the glass. All you have to do is break the wiper rod from the glass and let its spring turn over. However, due to aerodynamic and aesthetic considerations, many models now adopt the design that the hood is higher than the stop position of the wiper, and the hard break will be stuck by the hood. What should I do if I encounter this mode? In fact, automobile manufacturers have considered this point, and this kind of vehicle will have the operation of letting the wiper enter the maintenance position. The specific method is to turn on the switch, toggle the wiper lever to the single manual scraping position, let the wiper stand up and leave the usual standby position, and then turn off the switch, and the wiper will stay in the upright position, which is the maintenance position of the wiper. Then fold the wiper arm from the glass. You can also do this when replacing the wiper blade. However, due to the domestic environment, you are not allowed to do anything after turning the wiper of the car like this. So if the public security environment in your place is not so good, I suggest putting a layer of things directly between the wiper and the glass, such as a dry rag for cleaning the car, or a cardboard that is not easy to absorb water, or even a plastic pad. Just separate the wiper rubber from the glass, and that's all.
But what if one of you didn't pay attention, didn't let the wiper leave the glass when parking, or suddenly cooled down one day and found that the wiper was in close contact with the glass after getting up early? Don't worry, and don't pour it with hot water, because thermal expansion and cold contraction act on the glass, which is very easy to crack the precious front bumper of your car. Is there nothing to do but wait for the ice to melt slowly? Actually, it's not. If the outside temperature is about 0 degrees, you can pour some ice water on the glass to let the ice between the wiper and the glass melt naturally, and the temperature difference is very small. If the outdoor temperature is too low, this method will not work. What you can do at this time is to get into the car and start the car, blow the front gear with warm air, and remember never to move the wiper lever in the frozen state, because the resistance is great. At this time, pull the wiper rod, and the windshield of the wiper strip will be scrapped after freezing, otherwise the wiper system will be overloaded and the motor will be burned by excessive current. In this case, a very useful configuration in winter when buying a car-front gear electric heating comes out. Its working principle is to lay the same heating wire as the rear window at the stop of the wiper, and its function is also mainly used to melt the ice in the standby position of the wiper. I see that there are not many models equipped with front electric heating in the domestic market, mainly high-end SUV models such as Touareg Cayenne and Land Rover Subaru, all of which are off-road brands. The significance of this configuration lies in efficiency. You don't have to wait for the engine water temperature to drive the warm air, you can turn on the switch to heat it, which is both environmentally friendly and efficient. It can be said that it is one of the most practical configurations for models in the northern region in winter.
Wiper water? ? In fact, wiper water should pay attention to freezing point as antifreeze in winter. If you go to a cold area, it is recommended to replace the wiper water with a lower freezing point. If you find that the wiper nozzle is blocked by ice, don't spray it with brute force, which will damage the spray hose and wiper pump. The correct way is to pour cold water on the nozzle when the outdoor temperature is about 0 degrees and let it thaw naturally. If the outside temperature is too low, the nozzle can be thawed naturally only after the spare cover such as the vehicle is heated, but this process is very long and even ineffective in extremely cold areas. In other words, when you love your car, the nozzle is still frozen and you can't spray water. At this time, remember not to use the sprinkler system again. If there are stains on the glass that affect your vision, you can't see clearly with the wiper, just get off and wipe it with a wet rag. This is the only correct operation.
Door strip? Some people may ask, what else is there to pay attention to in this door? In fact, the sealing strip of the door will freeze. This happens when the sealing performance of some doors is not very good After the melted snow condenses between the door and rubber strip, the door won't open. The solution is to wait for it to melt slowly, and pouring it with hot water can only solve the problem of opening the door, but it will cause more rubber parts to be damaged, which is not desirable. The preventive measures are to check the tightness of the door seal on weekdays and keep the elasticity and surface smoothness of vaseline on the door seal regularly. It should also be noted that if the window is stuck, hard lifting will only damage the rubber strip and the motor, which is actually similar to the wiper. The operation of windows is the same for skylights, but I don't think many people will open skylights in winter.
Are you ready to drive? Ok, I can finally get into the car after a big turn outside, but there are several things to pay attention to when starting the car in winter. In the start-up preparation stage, turn on the vehicle switch and wait for the vehicle self-inspection. At this time, the vehicle will let the engine oil in the vehicle enter the starting preparation position, so as to avoid the wear of the parts in the cylinder during cold start to the greatest extent. Ignition after the self-inspection is completed will definitely be more difficult than when the temperature is high. First, the fluidity of engine oil is poor at low temperature, and second, the performance of battery will plummet with the temperature in winter. When starting, remember to disconnect all the electrical appliances plugged into the cigarette lighter and turn off the headlights, air conditioners and other electrical appliances, so as to minimize the instantaneous load of battery starting, which is beneficial to smooth starting and protect battery life. At this time, the electric heating seat and steering wheel equipped with the vehicle are turned on for heating, and the warmth of winter slowly penetrates into the skin. At this time, I have to feel sincerely that the greatness of science and technology lies not only in the high-rise buildings in the sky, but more importantly, it has actually improved the quality of life in these places that can be seen and touched every day.
After starting, you may face several choices, because the temperature difference between inside and outside the car is huge in winter, and there is likely to be frost or fog on the window. At this time, if there is a vehicle equipped with air conditioning and electric heating assistance, its air conditioner can quickly blow out hot air to blow away the water mist attached to the inside of the glass, directly giving you a clear driving vision. What if there is no such configuration? What we can do at this time is to prepare a dry rag to wipe the inside of the glass before the vehicle starts, and then turn on the air conditioner and adjust it to the hottest wind. Although there will be no hot air blowing, the air passing through the condenser tube of the compressor will be much drier than that directly blown, and the residual water vapor will be forcibly taken away by the air volume and wind speed. Electric auxiliary heating of air conditioner can be said to be the configuration with the highest happiness in winter. Wait until everything is ready and the vision is guaranteed, then warm up the car on the road. Modern vehicles do not need in-situ preheating. When the vehicle is cold-started, the engine will increase the fuel injection and forcibly heat it to the working temperature, which will only increase the emission and not make the vehicle suspension have a preheating process. But in the initial period of time, the water temperature and oil temperature of the engine did not come up at this time, the engine speed should not exceed 2500 rpm, and try not to slam on the brakes. Drive safely for about 5 kilometers, wait for the water temperature and oil temperature to reach the working temperature, and after the suspension fully moves and recovers its toughness, you can drive according to the usual driving method. No matter you are the captain of Turtle Speed or a hot-blooded teenager in 2nd gear 7300, you can play as you like on the premise of observing the road regulations and ensuring safety ~
Summarize the precautions that should be paid attention to before driving in winter again. To sum up, according to the climatic conditions of the place where you drive, choose to prepare the appropriate oil-water maintenance in advance and do the routine maintenance of the vehicle; Rubber parts freeze in winter. Never pour them with hot water. For the choice of vehicles, it is best to choose a vehicle with a full set of electric heating, that is, seat steering wheel heating, front and rear windshield heating, and air conditioning electric auxiliary heating. If you buy vehicles with the above configurations, please read the instructions carefully and use these configurations flexibly in actual operation, so that they can serve you well in severe winter. Also remember, driving in winter, the light is low, the line of sight is poor, pedestrians move slowly, and the road conditions are poor. Usually, we should follow a slow word, that is, slowly step on the accelerator and brake, pay attention to observation and abide by laws and regulations.