Do I Need to Drain Water from the Engine at Minus Three Degrees Celsius?

[DeEmery]

This depends on the solution in the radiator. If the radiator is filled with tap water or distilled water, it will freeze at minus 3 degrees Celsius, especially when the car is parked for an extended period, leading to more severe freezing. However, if the radiator contains automotive-specific antifreeze, it will not freeze. Automotive antifreeze is typically blue or pink and has a freezing point of -30 to -35 degrees Celsius. Even when mixed with water, its freezing point remains at least -10 to -15 degrees Celsius. It is advisable to regularly check the antifreeze level and top it up when necessary during routine vehicle use. Cooling System: The cooling system circulates coolant via a water pump to dissipate heat from the engine. Insufficient coolant will disrupt this circulation, potentially damaging the engine. If the temperature gauge reaches the red zone, it is recommended to pull over and turn off the engine immediately to prevent damage. As long as there is antifreeze in the reservoir, the system should be fine, but it is best to identify the cause of any coolant loss. Function of Antifreeze: As the working medium of the engine cooling system, antifreeze also prevents boiling in summer, keeping the engine from overheating. Water boils at 100 degrees Celsius, while the engine typically operates between 90 and 100 degrees Celsius, sometimes even higher. Antifreeze, with a boiling point above 100 degrees Celsius, effectively helps cool the engine.