Since the cost of urban water use has been rising steadily, car washing is no longer a separate source of income. Many car beauty shops and repair shops treat car washing as an auxiliary service. Some car owners find that after they drive their cars to the repair shop for washing, the tires are deflated afterward. People know there's something fishy going on, but they just can't uncover the truth. A former employee who once worked at a repair shop revealed the inside story to me.
Some repair shops, in order to attract more business, secretly instruct the car washers to puncture the tires while washing the car. The tool used is usually a sharpened iron wire hidden in the cloth used for wiping the car.
It is understood that during the car wash process, it is divided into three parts: first, using the water gun to rinse the car; second, applying car wash detergent; third, cleaning the interior of the car. They won’t act during the first two steps, but when it comes to cleaning the interior, everyone will crowd around, blocking the owner's line of sight, and then they start puncturing the tire. They usually choose the right side of the car because the driver is on the left side, and after getting out of the car, he stands on the left side, so puncturing the right side of the tire is less likely to be noticed. Moreover, the sound of the vacuum cleaner is loud enough to cover the sound of the air being released.
All car owners hope their beloved cars last long and reduce maintenance costs. To achieve this, one must learn how to scientifically maintain the car. However, in car maintenance, such situations often occur where people think they are maintaining the car, but actually end up damaging it. Some may even damage the paint protection layer, leading to peeling and rusting. After reading the following wrong maintenance methods, car owners can check if they have similar improper behaviors.
The primary purpose of washing a car is still to clean off the dirt. Using only clear water will definitely not clean it thoroughly. What to use to wash the car is very particular. Nowadays, the car wash agents used by car wash shops can basically be divided into three types: laundry powder, dishwashing liquid, and dedicated car wash liquid. Some car owners go to the car wash shop and see the staff working diligently, with bubbles flying all over the place, demonstrating strong "cleaning and decontamination" capabilities, making even the dirtiest cars seem manageable. After washing, from the outside, the car looks quite clean. If you want to know what exactly the car wash shop uses to wash your car, you can pinch and smell those bubbles with your fingers - it's laundry powder! Yes, some car wash shops use laundry powder to wash cars.
Laundry powder is an alkaline detergent that can greatly harm the car paint. If you keep using laundry powder to wash your car, the surface of the car will gradually lose its luster. The corrosion caused by laundry powder on the car paint is difficult to detect in the short term, so many car owners don't realize the severity. The boss of the car wash shop knows that laundry powder can ruin the car, but why do they still use it? The fundamental reason is that laundry powder is low-cost and effective quickly. Some car wash shops also use dishwashing liquid to wash cars, and the type generally purchased by the shopkeeper is similar to the large bucket of dishwashing liquid used in the catering industry. Although such dishwashing liquid is only tens of yuan cheaper than dedicated car wash liquid, it is still widely used in car wash shops.
A car beauty shop owner said: "Dedicated car wash liquid is neutral and does not damage the car paint, but it is slightly more expensive than dishwashing liquid. Now that water fees are getting more expensive, the profit margin for car washing is getting lower, so store owners are doing everything possible to cut costs." This boss also revealed a trick to distinguish: look at the hands of the car washer during the car wash. If the car washer's hands turn white, it proves that he has been using alkaline detergent to wash cars for a long time.
There’s also a technique to the water flow when washing a car
From the outside, car washing seems like a simple physical labor task with no apparent skill involved, but the water flow used in washing a car is quite particular. Professional car wash shops will never start by wildly spraying high-pressure water guns. Usually, the first round involves a slow, gentle stream of water, moving from top to bottom to flush away dust particles adhering to the car. Starting with a high-pressure water gun would be equivalent to letting the dust particles perform a "friction movement" on the car paint surface.
Sometimes, car owners, for convenience, frequently wash their cars at roadside shops. If you observe carefully, you’ll notice that their buckets contain plenty of mud and sand. It's practically the same as scrubbing the car with sandpaper. Some car wash shops use towels that were discarded by hotels. These towels may appear new and white, but in reality, they have become rough and can also harm the car.
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