Is it harmful to car paint to wash the car automatically at the gas station?

Introduction In many places, we can see that an automatic car wash machine will be placed outside some gas stations, and advertisements will be put on it: Free car wash with gas, as a promotion method. Although the automatic car wash machine can be regarded as a mature product as a car wash tool, no matter what products need to be maintained, According to my observation, the free automatic car washing machines in gas stations are basically washed by one car immediately after the next car is washed, and the car washing machine is not cleaned or washed during this period, resulting in the scroll bar scrubbed by the sediment on the front car scrubbing the car behind, which I feel will damage the car paint.

The paint on our cars is actually a relatively soft substance. Some Japanese brand cars will have traces even if they are pressed with nails. Even some cars with thick paint will draw a small scratch if they are wiped with a rag with fine sand. Although these traces can be solved by regular polishing, they usually look uncomfortable.

Compared with professional automatic car washers, the automatic car washers in gas stations are relatively low-equipped, and the car washer process is relatively simple. In terms of scientific maintenance, the automatic car washers need to change and clean the bristles regularly, but I have seen that the bristles on many gas station car washers are deformed and many stains are stuck on them.

If the car is driven into this car washer, when the bristles come into contact with the car paint, it actually causes some abrasion to the car paint. If some metal substances are exposed in some bristles that have not been replaced in time, it will also cause relatively large scratches on the car paint, and these scratches may still hurt the primer.

Moreover, after washing the car on this kind of car washing machine which lacks maintenance, the effect of washing the car may not be particularly ideal. It may be that the bristles are not cleaned, or some water guns are blocked. Many times, after washing the car, except for some obvious silt, other dirty places are still on the car.

So, personally, I don't recommend cleaning the free car washer at the gas station. If you cherish your car, unless it's a tool car or a car with an Iraqi appearance, it doesn't matter if there are more scratches, you can wash the car for free on the principle of washing off the sediment on the car, or you can wash it honestly in the car wash shop.