What is the method for bleeding antifreeze?
2 Answers
Antifreeze coolant refers to a coolant with antifreeze function. Press the button to open the front engine hood. Then lift the front engine hood. After that, open the cap of the small coolant reservoir. Then drain all the antifreeze. Next, fill the reservoir with antifreeze until it is full. Run the engine until the water temperature reaches 90 degrees and no longer rises. Then open the reservoir cap to release the air.
Over the years of driving, I've encountered the issue of bleeding the coolant system several times. The basic method is to bleed the system while the engine is running: start the car first and let the water temperature rise to the midpoint, indicating it has reached operating temperature. At this point, the cooling system circulates better when warmed up. Park on level ground, and remember not to open the radiator cap directly while the engine is running—it can cause burns! Wait a few minutes for the fan to cycle, then slowly unscrew the cap, not too quickly, releasing the air bit by bit as bubbles emerge. Top up with coolant to fill the empty space, tighten the cap, and repeat the process until no more bubbles appear. Why is this important? Air in the system can cause the engine to overheat, and driving in summer may lead to a burst radiator. Safety tip: perform this in an open area, wear thick gloves for protection, and add fluid slowly to prevent splashing. Regularly checking the fluid level and color changes can prevent issues. After bleeding, remember to test-drive to ensure the temperature remains stable.
