Coolant is a special fluid used primarily in engines to regulate and maintain the appropriate operating temperature. Its main purposes are:
- To absorb excess heat generated by the engine during combustion and transfer it away to prevent overheating. The coolant circulates through passages in the engine, absorbs the heat, then flows to the radiator, where it cools down before recirculating (web:1, web:6, web:4).
- To act as an antifreeze by preventing the coolant and engine components from freezing in cold temperatures, which could cause damage like cracking (web:4, web:6).
- To prevent rust and corrosion in the cooling system's metal and other components by including additives (web:1, web:3, web:4).
- To lubricate moving parts it comes into contact with, such as the water pump and gasket, preventing damage (web:1).
Coolant is typically a glycol-based liquid mixed with water (commonly 50% water and 50% glycol) and comes in various types and colors depending on the vehicle requirements (web:3, web:6). In summary, coolant is essential for protecting an engine from heat damage, freezing, corrosion, and wear, ensuring the engine runs smoothly and efficiently.
