The replacement cycle of the air filter is 10000-15000 kilometers:
1. It can be replaced according to the replacement cycle indicated on the manufacturer's maintenance manual. Under normal circumstances, it is recommended to replace the air filter every 10,000-15,000 kilometers, because the blockage of the air filter will affect the intake air volume of the engine, which will change the air-fuel ratio in the engine, which will reduce the power of the vehicle and increase the fuel consumption, etc.;
2. Under normal circumstances, the air conditioner filter element can be replaced once a year. It is used more frequently in winter and summer, and is replaced once every 10,000 kilometers. If the air environment is relatively poor, the replacement mileage can be shortened and replaced once every 7,500 kilometers. The main function of the air conditioner filter element is to filter bacteria, PM2.5, moisture, pollen and dust in the air;
3. Therefore, the air filter element should be replaced on schedule for the good operation of the vehicle engine; the air conditioner filter element should be replaced in time for the healthy air of the occupants in the vehicle.

The hazards of not replacing the air filter for a long time:
1. Air filter element: The air filter element can block the dust and road dust entering the engine. These hard particles will cause the internal wear of the engine, causing scratches on the surface of the cylinder, adsorption on the surface of closely fitted parts, and causing surface wear of exposed and lubricated parts;
2. Air conditioner filter element: The main component of the air-conditioning filter element is activated carbon, which is an efficient adsorption material. As early as the "World War I", it was used in gas masks, and now activated carbon is widely used in automobile or indoor air purification;
3. If it is not replaced for a long time, the filter element will lose its proper function, which will directly affect the air quality in the cab. In this small space, if you stay in it for at least 2 hours a day, the space is small and the air is poor, which may lead to illness in the long run.