What is the replacement interval for car engine coolant?

[McLane]

Car engine coolant should be replaced every two years. Its function is to protect the engine and ensure its proper operation by circulating within the engine radiator, providing anti-freeze, anti-boil, anti-rust, and anti-corrosion effects. Most coolants are red or green in color to help identify leaks or distinguish them from other engine fluids, preventing confusion. Coolant replacement steps: 1. Turn off the engine and wait about 30 minutes for the coolant to cool down; 2. Use a jack to lift the vehicle; 3. Use a wrench to loosen the screw at the bottom of the radiator and collect the old fluid in a waste fluid container; 4. Remove the radiator cap with a wrench, being careful not to get burned; 5. Add softened water and let the engine idle for 5 minutes to fully clean the internal cooling circulation system; 6. Add new coolant up to the maximum water level mark; 7. After idling for 5 minutes, observe the coolant reservoir scale and top up if necessary.