How to Add Car Coolant?

[OGraham]

Method for adding car coolant: 1. Open the drain valve of the radiator, wait until all the antifreeze inside is drained, then insert a clean water hose of appropriate thickness into the radiator for flushing, ensuring the water flows through the entire cooling system. 2. After completing the above steps, close the drain outlet and start adding antifreeze to the radiator until it is full, not exceeding the marked maximum level, then tighten the cap. 3. Start the engine, open the radiator cap, and let the engine idle for two to three minutes to expel some air from the radiator. If the antifreeze level starts to drop, continue adding antifreeze until it reaches the maximum level, then close the cap.