2. Conduct an all-round inspection of the vehicle: check the pipeline for signs of leakage and cracks, and check the five-way water pipe. If this part of antifreeze leaks, replace the water pipe or re-fix the connection according to the situation.
3. Lift the vehicle with a jack.
4. Tighten the screws of the bottom shell of the water tank with a wrench, and connect the old liquid with the waste basin.
5. Cover the expansion box cover with a thick towel, slowly loosen it until the air pressure is exhausted, and then completely remove the box cover. Use a compressed air spray gun or a thick towel to pressurize the water inlet of the expansion tank and remove the antifreeze on the engine block as much as possible.
6. Add softened water and idle for 5 minutes, so that the inside of the cooling circulation system can be fully cleaned.
7. Add new antifreeze to the upper limit of water level.
8. Run at idle speed for 5 minutes, then observe the scale line of antifreeze tank and fill it up.