What is the reason for the coolant running out after a few days of adding it?

[Melody]

There may be a leak somewhere that was not properly checked during replacement. It is recommended to have it inspected at a repair shop. Relevant information about antifreeze is as follows: 1. Antifreeze is a type of coolant containing special additives, mainly used in liquid-cooled engine cooling systems. Antifreeze has excellent properties such as preventing freezing in winter, boiling in summer, and preventing scale and corrosion throughout the year. 2. Try to use the same brand of antifreeze. Different brands of antifreeze use different metal corrosion inhibitors, so antifreeze from different brands should not be mixed. 3. The shelf life of antifreeze is mostly two years (some products may be longer). When adding, make sure the product is within its shelf life. When replacing, drain the old fluid, clean the cooling system thoroughly, and then add the new fluid.