What Causes the Engine Coolant to Always Decrease?

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Engine coolant may decrease due to normal consumption; corrosion and deterioration of the cylinder head gasket; coolant leakage; damage to the radiator cylinder gasket; or loosening of the overflow tank, water pump joint surfaces, and pipe connections in the cooling system. How to determine if coolant is low: Observe the coolant warning light on the dashboard. If it lights up, it is likely due to low coolant, although it could also be caused by excessively high cylinder temperatures. Check the coolant reservoir. If the fluid level is below the minimum mark (MIN), do not continue driving and promptly add coolant. Inspect the water level markings on the coolant tank. The normal coolant level should be between the maximum and minimum marks. To determine if coolant is low, check the markings. If the coolant level is below the minimum mark, it indicates a shortage. Coolant replacement interval: For vehicles that operate for long periods, such as taxis, high-quality coolant should generally be replaced once a year. For vehicles with shorter operating times, replacement can be done every two years or every 30,000 kilometers. To prevent excessive foam formation, which reduces the heat exchange efficiency between the coolant and engine components, ensure the product is within its validity period when adding it. Long-life coolant can remain effective for up to three years. If suspended particles, sediment, or signs of deterioration or discoloration are observed in the coolant, replace it immediately and clean the system.