Does a Car Radiator 'Boiling Over' Cause Damage to the Engine?

1 Answers
Jim
07/29/25 3:54pm
Yes, a car radiator 'boiling over' can cause damage to the engine. The temperature of the radiator can be observed from the car's coolant temperature gauge, which generally should not exceed 95°C. When the temperature reaches 100°C, you should stop driving immediately. Below are the hazards of a radiator boiling over: 1. Electric fan damage: If there are issues in the cooling system such as a damaged thermostat, faulty electric fan, or low coolant level, the coolant in the radiator cannot cool down, leading to increased water temperature. 2. Disruption of normal clearances between parts: This prevents the maintenance of proper oil films between parts, which can result in minor issues like engine cylinder or bearing damage, or in severe cases, complete engine failure or even total loss.
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