What is the difference between adding antifreeze and adding water?

1 Answers
MacBrooklyn
07/30/25 3:44am
The difference between adding antifreeze and adding water lies in the freezing point, boiling point, and function. Freezing point difference: Water freezes at 32 degrees Fahrenheit, while antifreeze freezes at -40 degrees Fahrenheit. Boiling point difference: Water boils at 100 degrees Celsius, while antifreeze boils at 108 degrees Celsius. Function difference: Water can cause rust and scale buildup in the engine's cooling system, whereas antifreeze prevents the coolant from freezing and cracking the radiator in cold winter conditions. Antifreeze is a special additive-containing coolant primarily used in liquid-cooled engine cooling systems. It offers excellent performance in preventing freezing in winter, boiling in summer, and resisting scale and corrosion year-round. Precautions for adding antifreeze to a car: Use the same brand of antifreeze. Different brands may have varying production formulas, and mixing them could lead to chemical reactions between additives, rendering them ineffective. The key indicators of antifreeze are its freezing and boiling points. Market-available antifreeze comes in specifications like -15°C, -25°C, -30°C, and -40°C. It is advisable to choose an antifreeze with a freezing point at least 10°C lower than the lowest temperature in your region.
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