The chemicals in antifreeze have many benefits for the car's engine cooling system. One of these advantages, which is the most important application of antifreeze, is that it does not allow the coolant inside the engine compartment to freeze in winter weather. If you want to know at what temperature antifreeze freezes, think of it as water freezing at 0°C or 32°F. Therefore, a mixture of 50% water and 50% antifreeze freezes at about -37°C or -35°F.
Another use of antifreeze is to raise the boiling point of water. As you know, water boils at 100 degrees Celsius or 212 degrees Fahrenheit. The higher this degree, the better it will be for the engine, because boiling water will damage the engine.
