How to Properly Replace Engine Coolant?

[DiSebastian]

Before replacing the coolant, always wait for 10 minutes after the engine is turned off. The coolant temperature remains extremely high after driving and can cause burns. Inspect the hoses for any signs of leakage or cracks, and check the five-way water pipe. If coolant leakage is observed, replace the hose or resecure the connection as needed. Use a jack to lift the vehicle. Loosen the screw at the bottom of the radiator with a wrench and place a waste fluid container to catch the old coolant. Cover the expansion tank cap with a thick towel and slowly loosen it until all pressure is released, then completely remove the cap. Use a compressed air blow gun or a thick towel to pressurize the expansion tank filler neck, ensuring maximum removal of old coolant from the engine block. Add new coolant up to the maximum fill line.