How to Drain Coolant?

[LaJulian]

Unscrew the radiator cap, open the radiator drain valve, and the coolant can be drained. The method for replacing the car engine coolant is as follows: 1. Unscrew the radiator cap, open the radiator drain valve, and drain the coolant. 2. Insert a rubber hose connected to a tap into the radiator filler port, turn on the tap, and let tap water continuously flow through the engine cooling system. During the flushing operation, keep the engine idling and continue the above steps until clear water comes out of the radiator. 3. Turn off the tap, wait until all the water in the cooling system is drained, then close the radiator drain valve. 4. Add coolant to the radiator filler port until it is full. Unscrew the reservoir cap, add coolant up to the "Max" mark, being careful not to exceed it. 5. Replace and tighten the radiator cap and reservoir cap. 6. Start the engine and let it idle for 2-3 minutes, then unscrew the radiator cap. At this point, the coolant level will drop as some air is expelled from the cooling system. Add more coolant until it reaches the "Max" mark again.