Cleaning procedures for domestic water tanks and air-conditioning water tanks should be professional, and the sooner the better.

1, start the engine to normal working temperature and then turn it off;

2. Open the water tank cover, shake well the water tank cleaning agents (brands such as Bono and 7CF) produced by regular manufacturers, and add them to the water tank according to the proportion of 5-24 liters of water per bottle (generally, one can be added to the car at one time);

3. Start the engine, idle at room temperature for 20-30 minutes, and keep the thermostat valve at the highest point;

4. Turn off the engine, and after discharging the original coolant in the water tank, flush the water tank with clean water until the discharged water is clear (no rust and dirt);

5. It is recommended to clean antifreeze before each replacement (the normal service life is two years).

Matters needing attention when cleaning the water tank:

1. For the water tank that has not been cleaned for a long time, the cleaning time can be appropriately extended to 12 hours (normal driving);

2. Add antifreeze or water tank treasure produced by regular manufacturers into the cleaned water tank;

3. Avoid water tank cleaner contact with skin and eyes;

4, as far as possible to the professional repair shop, for this operation.