As for your question, although the new car has been cold-run-in in the factory, it still needs more than 3000-5000 kilometers to establish a good cooperative relationship between the moving friction parts of each part. Pay attention to the following points in the running-in period of new cars: 1. The speed of high-speed engine should not be too high during the running-in period, and it must not exceed 3500 rpm. It doesn't matter how many kilometers per hour. 2. Cold start requires a warm-up process, and it usually takes about 3-5 minutes to drive on the road after the water temperature changes. 3. The load must be reduced according to the vehicle type, and it is advisable not to exceed 70% of the specified load. 4. Sudden braking has a great influence on the engine, braking system and chassis of the new car. It is necessary to deal with the situation in advance and downshift. 5. Avoid sudden refueling and sudden braking, and try to keep driving at a constant speed. I hope my answer is helpful to you.
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