The reason for the fogging of the car windows is the “hot inside and cold outside”. When the temperature difference between the inside and outside of the car is large, the water vapor exhaled by the occupants in the car will condense into water vapor when it encounters the cold glass. This is an old problem, but not a minor one. Once the line of sight is blocked, accidents may occur within a few seconds. Therefore, defogging is essential.
The day before yesterday, the reporter interviewed Mr. Han, who has five years of driving experience, Coach Lin from Wanli Auto School, and Master Su from Shunfeng Auto Repair shop on the issue of “fogging on the front block”, and summarized three methods with higher usage rates for comparison.
*Original method: wipe with a dry cloth or paper towel
Advantages: immediate results
Disadvantages: laborious, unsafe, leaving marks after rubbing
*The original method is to wipe the glass directly with a dry cloth. Many citizens must have seen this kind of scene: the old drivers always keep a towel and wipe the glass when they stop at a red light. The disadvantage of this method is that it is more laborious, there will still be traces on the glass after wiping, and it will soon become foggy. If you wipe while driving, it is easy to cause an accident.
*Convenient way: blow with hot air
Advantages: no distraction
Disadvantages: slow onset, the rest of the car windows are still foggy
The second method is to blow directly with hot air. However, this method works relatively slowly, and when the hot air is turned on when the vehicle is moving, the fog on the front glass is getting bigger and bigger, and the glass will gradually become clear after waiting for more than ten minutes.
*Creative method: detergent with dry cloth to wipe
Advantages: good prevention effect
Disadvantages: to be dealt with in advance
The owner of the car, Mr. Han, is very happy to accept new things. Regarding the problem of “defogging in cold weather”, he collected a lot of materials on the Internet and tried the method of “dishwashing liquid with dry cloth” , and the effect was not bad. Choose a sunny day, mix the kitchen detergent with water (about 1:6), spread it evenly on the glass in the car with a sponge, and wipe it with a dry cloth after it dries, leaving no traces.Under normal circumstances, the effect can last for half a month.
The after-sales staff of 4s shop told reporters that this method is feasible, because the detergent contains surfactants, which can change the surface tension of the water and make the fog droplets quickly condense into large water droplets, which can have an anti-fogging effect. “However, this is a preventive measure and must be dealt with in advance. If you wait until you find fogging, it will be too late.”
Link to this article：How to quickly deal with the fogging of the front windshield
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