Running-in Period RPM?

[Zoey]

During the running-in period of a new car, it is generally best to keep the RPM around 3000, as this is most beneficial for vehicle maintenance. Below are some relevant details about RPM: 1. For domestic cars during the running-in period, the speed should ideally be between 40 to 70 km/h, while for imported cars, it should generally be within 100 km/h, with the RPM kept below 3000 rpm. 2. This is because the surfaces of new rotating components always have certain imperfections, which can cause insufficiently tight contact and meshing between parts during operation, leading to more intense friction at the contact points. 3. The process where new rotating components undergo a period of operation and friction to achieve very close contact and smooth surfaces in their meshing and joining is called the running-in process.