How to Replace Coolant More Thoroughly?

[MacTyler]

Here is the method for replacing car coolant: 1. Unscrew the radiator cap, open the radiator drain valve located at the bottom of the car, and drain out the coolant. 2. Clean the cooling system by continuously pouring clean water into the engine cooling system. During the flushing process, keep the engine idling to maintain the flow of clean water inside until clear water comes out from the radiator. 3. Stop adding water, wait for the water to drain completely, and then close the drain valve. 4. Fill with new coolant until the liquid level is between the max and min marks. 5. Close the cap, start the car, and let the engine idle for two to three minutes. The cooling system will expel internal air, causing the coolant level to drop slightly. Top up the coolant again if necessary.