How to Replace Engine Coolant in a Car?
2 Answers
Methods for replacing engine coolant in a car: 1. Before replacing the coolant, turn off the engine and wait for about 30 minutes to allow 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 use a waste liquid basin to catch the old coolant; 4. Use a wrench to remove the radiator cap, being careful not to get burned; 5. Add softened water and let the engine idle for 5 minutes to thoroughly clean the internal cooling circulation system; 6. Add new coolant up to the maximum water level; 7. Let the engine idle for 5 minutes, then observe the coolant reservoir's scale line and top it up if necessary. Coolant circulates within the engine cooling system, carrying away excess heat generated during engine operation, allowing the engine to operate at normal working temperature. When the coolant is insufficient, it will cause the engine water temperature to rise too high, leading to damage to engine components.
I have experience changing the coolant a few times myself. It's quite simple but requires careful operation. Remember to do it when the engine is cold to avoid burns. First, locate the drain plug at the bottom of the radiator and unscrew it, then wait for the old coolant to drain completely. This process may take about half an hour. Be sure to catch the waste fluid with a basin and don't pour it randomly to avoid environmental pollution. Next, flush the inside of the radiator with water two or three times to wash out residual impurities. After tightening the drain plug, pour in new dedicated coolant until it reaches the standard level. Don't forget to turn on the heating system to remove air bubbles. Finally, start the engine and let it run for about ten minutes to observe if the temperature is normal. It's recommended to change the coolant every two years or 40,000 kilometers. Not changing it for a long time can corrode the radiator pipes.
