Why does the antifreeze level decrease during use?

[ODylan]

Antifreeze naturally depletes over time, but the rate of decrease is typically slow, usually lasting between six months to a year. During prolonged high-speed driving or frequent long-distance trips, evaporation of antifreeze may occur, but the loss should not be significant. If frequent top-ups are required, potential issues such as pipeline leaks, poor antifreeze circulation leading to overheating, or aging cylinder head gaskets should be considered. Additional information: 1. The full name of antifreeze should be antifreeze coolant, meaning it is a coolant with antifreeze properties. Antifreeze prevents the coolant from freezing in cold winter conditions, which could otherwise cause the radiator to crack or damage the engine block or cylinder head. Antifreeze is a specially formulated coolant primarily used in liquid-cooled engine cooling systems. It offers excellent performance in preventing freezing in winter, boiling in summer, and resisting scale and corrosion year-round. 2. When adding new coolant, it should be done when the engine is cold. Fill the coolant to the "MAXT" mark on the reservoir, tighten the cap, and start the engine. Let it idle until it reaches normal operating temperature, then turn it off. Once the engine cools down, check that the coolant level in the reservoir remains at the "MAXT" mark. If not, add more coolant until it reaches the required level.