A person working at a car wash, who is also a qualified employee, is well aware of how to wash a car. Such a specialist will be able to make the vehicle really clean and at the same time not harm the vehicle. All this is far from always true for people who decide to take a hose with water and wash themselves.
1. Close contact
Under no circumstances should the nozzle be pointed at a vehicle at a 90 degree angle. The corner must be sharp. It is also important to keep an eye on the distance between the machine and the sprayer. It cannot be less than 15 centimeters. All this is necessary so that the car paintwork does not crack.
2. Even more damage
It is very important to check the body and bumpers for chipped parts before washing the car. Minor damage to paintwork or fragile structural elements can be a starting point for more damage from a directed jet of water.
3. Eaten paint
In most cases, car detergents are alkaline. This, in turn, means that they must not be allowed to enter the mucous membrane, respiratory tract, eyes and ears. It is highly recommended to take care of hand protection as well. In the case of a car, a generic product can damage both the paint and the paintwork. To prevent this from happening, wash off the foam 5-10 minutes after application.
4. Killing jet
When washing a car from a hose (including with a spray), it is strongly not recommended to direct the jet to all kinds of sensors that can stop working from this, both temporarily and permanently. In addition, it is definitely not worth pouring water on the radiator grill. In this case, there is not a small chance to simply "fill" the car. Radiator cells may be damaged.
5. Good old corrosion
Finally, do not forget that water can accelerate corrosive processes. First of all, this applies to the already repeatedly mentioned paint chips and all kinds of scratches. Also, you should make sure that the water after washing does not stagnate in any secluded places.
Continuing the topic, read about car defects that you can safely close your eyes to when choosing a car and not only.