In case you’re asking ‘what temperature does antifreeze freeze, water freezes at 0° C, or 32° F. As the name suggests, antifreeze prevents the coolant inside your engine from freezing under normal winter conditions. The chemicals in antifreeze have huge benefits, and not only in winter. Antifreeze has many benefits to the engine cooling system. Ethylene glycol, or a more recent, less hazardous additive, but far more expensive propylene glycol can also be used. Typical colour of engine coolant / antifreezeĪntifreeze is a combination of distilled water and a type of alcohol. The colour of the engine coolant does not necessarily indicate a specific type. Engine coolant or antifreeze does in fact come in a variety of colours from green, yellow, pink, red, or orange. Commonly seen as a green colour as the bottle to the right suggests, engine coolant is a mixture of water and antifreeze. To ensure the engine is kept at an optimal running temperature, engine coolant is used. Veins in the radiator contain the hot coolant which air cools as the vehicle moves forward.Īirflow through the veins is maintained by a fan if the vehicle becomes hot due to being stationary for long periods.Ī significant number of engine failures are attributed in some way to engine cooling problems. The engine coolant becomes hot itself and so is transferred to a radiator located at the front of the car. Around half of this heat goes out of the exhaust, whilst the remaining heat remains inside the engine block.Ĭar engines need a way of cooling down else they will continue to increase in temperature until the working metal components inside will begin to literally melt, fuse together and the engine will seize. Engine coolant is a water based liquid that absorbs the heat from the engine. Some of this energy is used to move the vehicle forward (around one third), the other two thirds of the energy produced is converted to heat. Car engines create a great deal of energy by burning petrol or diesel.
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