What items must be done for 20,000 km vehicle maintenance?

20,000 kilometers need to carry out the first-class maintenance work for the car, mainly in accordance with the car maintenance manual. The usual items include changing oil, mechanical filter, air-conditioning filter, gasoline filter and cleaning air-conditioning filter, as well as some routine inspections. Routine inspection includes whether the oil such as refrigerant, brake oil and gearbox oil meets the requirements, checking all bolts on the chassis and checking the working condition of the circuit.

For most cars, the 20,000-kilometer throttle, air intake and nozzle don't need to be thoroughly cleaned, just need to clean the throttle. This place is the dirtiest and has the greatest impact, and the cost of cleaning the throttle is not high.

The next time you need to clean the throttle, you can clean the carbon deposit in the air intake, fuel injector and cylinder together, which can achieve the cleaning effect without wasting money. Similarly, the three-way catalytic converter does not need cleaning. As long as the car doesn't break down, it is suggested that it doesn't need to be cleaned all the time. Unless there is a fault code, or the automobile exhaust is not enough, it can be cleaned.