The nozzle is a precise device on the engine, which has a high matching precision. But its quality is invisible to the naked eye. Therefore, the maintenance in peacetime should pay attention to the following points:

1. Avoid long idle engine operation, which is very helpless, because of the total traffic jam.

2. Use and replace recommended oils as required (the more expensive the oil is, the better it is, the more sufficient it is). Refuel at well-known brand gas stations where you think the volume of refueling business is large. Do not always replace the gas stations.

3. Regular use of recommended fuel cleaning additives (this point is opposed, some people agree, if you add good fuel, you can also not use it. )

4. Change fuel filters regularly (preferably 15,000 kilometers). Sometimes run at a high speed. The speed is over 110 kilometers. Take care of safety. Don't run too fast.