These familiar knowledge of car fraud! !

These familiar "car knowledge" turned out to be false, and the truth is here.

As the saying goes, rumors spread, rumors broke their legs. Some familiar "automobile knowledge" turned out to be mostly "pseudo-knowledge".

For example, in the fifth issue, we mentioned that the cost of replacing batteries after three to five years can buy a new car, driving an electric car can't turn on the air conditioner, and the electric car can't run at high speed. It is all false knowledge, but it is undeniable that consumers' "prejudice" against electric vehicles and technological breakthroughs in electric vehicles will not be completely broken in a short time, and there is still a long way to go before electric vehicles replace fuel vehicles.

It's early winter. Today, we will talk about some false knowledge about winter car use, which is also the sixth issue of the series of "false knowledge" about cars. Do not believe, you should at least believe 1 these familiar "fake knowledge" about cars!

1, it's best to change winter tires in winter to reduce tire pressure?

When the temperature is low in winter, the tire will harden when it expands with heat and contracts with cold, which will affect the braking performance and driving safety. Therefore, many people say that winter tires should be replaced after winter to reduce tire pressure and increase the fitting surface between tires and the ground.

What are winter tires? That is, adding low-temperature silane compound catalyst to the tire can better resist low temperature. In addition to being more frost-resistant, winter tires have deeper grooves and ice nails, just like spikes worn when climbing mountains, which have stronger grip.

For most vehicles used in cities every day, it is not necessary to change winter tires. Of course, in areas with relatively cold and continuous snowfall, such as the northeast, it is necessary to replace winter tires or install snow chains.

Let's look at the tire pressure. Usually, the tire pressure is about 2.4bar. When the temperature is low in winter, the tire pressure will drop to about 2.2bar. At this time, there is no need to rush to replenish air, and it will return to the original air pressure after driving for a certain distance. In addition, when driving in winter, the tire pressure should not be too high, which will reduce the contact surface between the tire and the ground and reduce the braking effect, but it does not need to be adjusted too low, which will increase fuel consumption.

In short, it is most important to supplement the tire pressure properly and keep it within a reasonable range.

2. Glass water must be changed after winter?

Needless to say, the importance of glass water is a cleaning agent for car eyes, which can keep the front windshield in the best condition. Therefore, many people say that ordinary glass water is not frost-resistant, and it should be quickly replaced with special glass water after winter.

Indeed, most glass water used in summer is not frost-resistant. If it is used in winter, it will have a great impact on the spray pipe and spray motor after freezing, and it will freeze and crack the water pipe in severe cases.

But again, whether the car needs to be replaced with antifreeze glass water depends on the local climate conditions. If it is in a cold area and the temperature is very low in winter, it is necessary to use antifreeze or full-effect instead of glass water.

When the outside temperature is below MINUS 20℃, the antifreeze glass water will still not freeze. Full-effect glass water is more powerful, it can still not freeze at MINUS 40℃, and it is suitable for use in the northernmost cold area of China, but its cleaning effect is not as good as other types of glass water.

A hint, many friends like to use tap water and washing instead of glass water, which is cheap and convenient, but it is easy to freeze in winter. If the local winter is cold, it is best to replace it in advance.

Similarly, there are oils such as engine oil, antifreeze and brake oil, which should not be replaced in winter unless it is in extremely cold areas.

3. Can you wash your car less in winter?

Bian Xiao often hears a saying: You can wash your car less in winter.

It's really cold in winter, and I don't even bother to stretch my hand, let alone wash the car, so the number of car washes is obviously less. But after the snow and ice weather, it is best to clean the vehicle in time.

After experiencing rain and snow, the surface of the car body is covered with dust, dirt and other pollutants, which will do great harm to the car paint in the long run. Therefore, after the rain and snow weather, it is necessary to clean the vehicle in time to reduce the corrosion of the paint surface by the residue and ensure the driving sight.

It's cold in winter, and some car owners like to "take a hot bath" for their cars, but it's even more harmful to their cars.

When washing the car in winter, try not to wash the car just after stopping, especially when the hood is still in a high temperature state, and the temperature difference will damage the car paint. If you wash your car yourself, don't dry it even if it is cold, because the sand on it will wear the paint.

4. Can a four-wheel drive boldly climb a snowy slope?

Four-wheel drive gives people the feeling that they can do anything, such as wild racing, difficult cross-country and high-speed cornering. If you are a four-wheel drive owner, you naturally have more confidence in complex road conditions and are not afraid of climbing snow slopes.

If you want to climb a snow slope, you need enough friction between the vehicle tires and the ground. In this respect, four-wheel drive is definitely more advantageous than two-wheel drive, but if you encounter a snowy slope, especially a large slope, it is not recommended to climb by car easily.

If the ramp freezes, the friction coefficient will decrease, and it is estimated that four-wheel drive will not help. When the whole vehicle slides down, it is out of control and very dangerous.

No matter whether there is snow on the road or not, the premise of safe travel is to control the speed, and don't covet the driving pleasure of four-wheel drive and ignore safety.

5. Do you want to heat the car for a long time in winter?

Hot car is an inevitable "problem" in winter car use. Many people think that the longer the car is warmed up in winter, the better, which is good for both the engine and the chassis.

In fact, it is not that the hot car is too long, which not only consumes a lot of fuel, but also damages the engine and greatly shortens the service life. Moreover, the in-situ hot car only increases the temperature of the engine system, and other components are still in a cold state.

According to the user manual, the car does not need to be warmed up for a long time after starting. Considering that the temperature is low and the vehicle has not been used for a long time, the idle warm-up time can be appropriately extended, generally about 30 seconds to 1 minute. Moreover, when the vehicle is driving, the initial speed should not be too high, and the speed should be increased after driving for a certain distance.

In addition, when using the car in winter, you should go out in advance and leave enough time to take care of the snow on the car. Snow on the windshield can be treated with rags and shovels. Of course, you can also use bank cards. Don't use the wiper directly. Remember to turn off the wiper after parking in the outdoor parking space. If you are not lazy, you can also lift the wiper, otherwise it will bring you many "surprises" the next morning.