1. Car washing, including oil stains and sludge on the engine and chassis;

2. Change the oil, remove the deposits in each filter and remove the oil stains in the cylinder;

3. Check whether the lubricating oil quantity of engine oil pan, transmission, rear axle and steering gear exceeds the standard. If the amount of oil is low, add lubricating oil to the standard parts. In addition, it is necessary to lubricate the automobile distributor, the steering rod ball pin, the clutch pedal bracket pin, the rotating shaft, the front and rear leaf spring pins, the door and other parts;

4. Check the fixing of the spare tire elevator and spare tire, and lubricate all parts of the spare tire elevator;

5. Check and tighten the connecting bolts and nuts of the engine, transmission, transmission shaft, final drive, chassis and the outside of the car body. If there is a shortage, it should be filled according to the specified specifications and quantity;

6. Check and adjust the tightness of each drive belt such as air compressor and generator;

7. Check the functions of electrical equipment, including instruments, lights, air conditioners and heating devices, to see if they work normally;

8. Check whether the liquid level of the battery is higher than the polar plate 10 to 15 mm according to regulations, and whether there is leakage in its shell. Million car purchase subsidy