Why is the car water tank painted black?

Not that the water tank is painted black, but that the antifreeze in the water tank is black. It may be that some engine oil is mixed in the antifreeze, which leads to this phenomenon. It is also possible that there is a problem with the oil radiator or filter, or it may be caused by the aging of the seal. Common antifreeze solutions are colored, and common ones are pink and blue. When the missing liquid is found to be these two colors, it must be antifreeze.

It can not only prevent the car from boiling (the temperature is too high), but also effectively prevent parking and freezing in cold areas, and to some extent, it can also play a role in corrosion prevention and scale prevention. Then a friend will ask, what is the discoloration of antifreeze? Let's answer it for everyone.

If the antifreeze changes color, it is probably because the antifreeze has deteriorated, which not only has no good antifreeze effect, but also reduces the cooling effect on the engine. So when the engine is running at high temperature.

Without good cooling effect, the viscosity of engine oil will decrease, and engine parts will wear out over time, and may even be scrapped directly. You know, the maintenance cost of the engine is not low, so pay attention to the replacement cycle of antifreeze.