1. Now cars generally don't need to add cooling water regularly. The coolant tank contains coolant, not water. Adding water for a long time will produce scale and affect the heat dissipation of the engine. The antifreeze is not directly added to the water tank, but added to the rehydration pot connected to the water tank, and the scale can be kept online.
2. Its liquid level should be kept between min and max. If it is lower than min, it needs to be added with the same brand and specifications of coolant, otherwise it will be completely replaced. Engine cooling water will only give an alarm when it is particularly serious. It is recommended not to add water, which is easy to scale.