Why Does Coolant Level Decrease?

1 Answers
OValerie
07/29/25 3:37pm
Engine coolant level reduction can be attributed to the following reasons: 1. Coolant leakage in the engine cooling system, leading to complete loss: In this case, you should inspect the entire cooling circulation system from the radiator to the coolant pump, engine inlet/outlet ports, coolant pipes, and radiator for any leakage points. 2. Thermal expansion and contraction: When cold, the coolant level may appear below the minimum mark, but returns to between F/L after engine operation. It's recommended to check before starting the engine. 3. Air pockets in the cooling system: After some circulation time, trapped air gets expelled, causing coolant level to drop.
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