Car coolant, also known as antifreeze coolant, serves several critical functions in a vehicle's engine:
- Prevents Overheating: Coolant circulates through the engine, absorbing heat generated by the engine block and other components. It then passes through the radiator, where the heat is dissipated into the air, helping to keep the engine at an optimal operating temperature and preventing overheating
- Prevents Freezing: Coolant lowers the freezing point of the liquid in the cooling system, which is crucial in cold weather to prevent the coolant from freezing and causing engine damage such as cracked blocks
- Raises Boiling Point: It raises the boiling point of the cooling liquid, allowing the engine to operate safely at higher temperatures without the coolant boiling over
- Protects Against Corrosion and Rust: Coolant contains additives that inhibit rust and corrosion within the engine and cooling system components, such as the radiator and water pump, extending their lifespan and maintaining system efficiency
- Lubricates Moving Parts: Some components of the cooling system, like the water pump, are lubricated by the coolant to prevent damage and ensure smooth operation
- Maintains System Cleanliness: Coolant helps keep the radiator and cooling passages clean by preventing deposits and debris buildup, which can clog the system and cause overheating
In summary, coolant is a specially formulated liquid mixture (usually a 50/50 blend of antifreeze and water) that manages engine temperature, prevents freezing and boiling issues, protects against corrosion, and lubricates parts, ensuring the engine runs efficiently and reliably under various conditions
