1. Twist the car key of Dongfeng Xiaokang c37 and turn off the engine.
2. Let the engine of Dongfeng Xiaokang c37 stand still until the water temperature drops to normal temperature.
3. Pull the front flip switch of Dongfeng Xiaokang c37.
4. Lift up the Dongfeng Xiaokang c37 and turn forward.
5, unscrew the Dongfeng Xiaokang c37 small kettle to release the pressure.
6. Disconnect return pipe, drain water, and then connect return pipe.
7. Fill the small kettle with antifreeze.
8. Run the engine to 90 degrees.
9. Turn off the engine until the water temperature drops to the normal temperature.
10, unscrew the lid of the small kettle and let off the gas.
1 1, add antifreeze to the upper limit.