Why Does Coolant Decrease?

[RichardRose]

Reasons for coolant decrease: Coolant serves a cooling function for the car engine. The operating engine is often in a high-temperature state, and since the coolant is in contact with the engine, some consumption is normal. Most coolants have a boiling point above 100 degrees Celsius, and the primary reason for the decrease is natural evaporation. The typical normal consumption rate is half a liter per year. Cars generally need to have coolant topped up every 20,000 kilometers driven. If coolant needs to be added every 300 to 500 kilometers, this is abnormal and may be caused by leaks or poor circulation leading to excessive consumption. The main causes of leaks are: 1. Damage to the radiator gasket resulting in coolant leakage; 2. Loose connections at the overflow tank, water pump interface, and various coolant system pipe fittings, leading to poor sealing and coolant leaks.