Is it normal for the coolant level to decrease?
2 Answers
It is normal for the coolant level to decrease. Here is additional information: 1. Coolant should be checked regularly. If it falls below the minimum level, it may cause unnecessary trouble. 2. Insufficient coolant can affect the cooling system and, in severe cases, may lead to engine damage. 3. In winter, a lack of coolant will significantly reduce its antifreeze effect, potentially freezing the radiator and affecting the vehicle's normal operation. 4. Coolant should generally be replaced every two years or 40,000 kilometers, though this is not absolute. Actual conditions should be considered—running a few extra thousand kilometers or delaying replacement by a year or two may not cause major issues. Note that different types of coolant should not be mixed, as chemical reactions may occur and damage the engine.
It's quite normal for the coolant level to drop occasionally. With my extensive driving experience, I know that a vehicle's cooling system naturally loses a small amount through evaporation, especially during hot weather or after long-distance driving. When checking the fluid level in a cold engine state, minor fluctuations shouldn't be a concern. However, if the level drops rapidly by several centimeters within a month or two—for example, from the full mark to below the midpoint—there might be an issue. Common causes include aging hoses, water pump leakage, or radiator cracks. From numerous cases I've seen, coolant leaks not only increase fuel consumption but may also lead to engine overheating and breakdown. Therefore, if there's a slight shortage, simply top up with properly mixed coolant. But if the level drops frequently or significantly, visit a dealership immediately for leak detection—don't delay to prevent minor issues from turning into major repairs. When inspecting yourself, always remember to tighten the radiator cap properly to minimize evaporation.
