Antifreeze is a liquid used in the cooling systems of vehicle engines to prevent the coolant from freezing in cold temperatures and from overheating in hot temperatures.
It is typically a mixture of water and chemicals, such as ethylene glycol or propylene glycol, which have properties that lower the freezing point and raise the boiling point of the coolant.
This fluid is an important part of ensuring that the engine stays in its ideal operating temperature.
Antifreeze prevents the coolant from freezing in cold weather, which would otherwise cause it to expand and cause damage to the engine, radiator and the rest of the coolant system.
It also helps prevent overheating in hot weather by raising the boiling point of the coolant, allowing the engine to operate at higher temperatures without the risk of overheating.
An added benefit is that it provides corrosion protection by containing additives that protect the engine's cooling system components, such as the radiator, water pump and hoses, from corrosion.
Included in the mixture are chemicals that help lubricate parts within the cooling system.
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