How Often Should Car Coolant Be Replaced?
1 Answers
Car coolant should be replaced approximately every 2 years or 40,000 kilometers. Coolant, also known as antifreeze coolant, is designed to prevent freezing in cold winter conditions, thereby avoiding damage to the radiator and engine cylinder block or head due to freezing. Coolant is primarily used in liquid-cooled engine cooling systems and offers excellent performance in preventing freezing in winter, boiling in summer, and resisting scale and corrosion throughout the year. The functions of coolant include: 1. Providing anti-corrosion protection for cooling system components; 2. Preventing scale buildup to avoid reduced radiator efficiency; 3. Ensuring the engine operates within the normal temperature range. Antifreeze must possess characteristics such as freeze protection, boil-over prevention, corrosion resistance, scale prevention, and being foam-free, unaffected by seasons or geographical regions.