Does the car water tank need to be filled with water regularly?

What is in the car water tank is antifreeze, not water. It should be changed every two years according to the manufacturer's requirements. The original factory is generally the standard of MINUS 40 degrees. It is best not to add it yourself: because different brands of antifreeze have different formulas, they cannot be mixed. There is also a supplementary water tank next to the car water tank (note that there is a pipe connecting the water tank), and there is already a spare antifreeze in it. If the water tank is insufficient, it will be replenished automatically. Warm air comes from the engine, and the white smoke in the exhaust pipe is the hot gas after the gasoline in the engine burns, which only appears when it meets cold air (so it is very common in winter). This white smoke has nothing to do with the water tank. If your car emits white smoke, congratulations, it shows that the engine is fully burned and in good working condition. It would be better if it drips water from the exhaust pipe again. If the smoke is black smoke, it means that the combustion is not good, it must cost oil and the engine is weak. If it's blue smoke, it means the oil is burned. Go to the repair shop as soon as possible.