Replacing the car's antifreeze requires following a standardized process to ensure the cooling system's efficiency. It is best to replace it every 3,000 to 4,000 kilometres or as specified by the manufacturer. Before performing the procedure, ensure the vehicle is turned off and has cooled for at least 30 minutes to avoid burns from hot fluids. First, engage the parking brake on level ground, locate the drain valve at the bottom of the radiator, and position a fluid collection container. Next, attach a rubber hose to the radiator filler neck and flush the cooling system with clean water while running the engine at idle until the discharged water runs clear, ensuring complete removal of residual contaminants. When adding new antifreeze, use a product that matches the original factory specifications and fill through the radiator filler neck until the level reaches the "MAX" mark on the overflow tank. Avoid mixing different brands or colors of coolant. Start the engine and let it idle for 2-3 minutes to purge air bubbles, then top up to the proper level. Finally, with the system cooled, verify the fluid level is between the "MIN" and "MAX" marks and securely tighten all caps and valves. Note that certain vehicle models may require specific bleeding procedures. Proper antifreeze replacement effectively prevents engine overheating and extends the cooling system's service life.
