What is the recommended break-in speed for a car?
1 Answers
During the break-in period, it is advisable to limit the speed to 80-90 km/h. The break-in period, also known as the running-in period, refers to the initial phase of a new car or after a major overhaul, typically covering 1,000-1,500 kilometers. This is the essential mileage required to ensure that mechanical components fully contact, friction, adapt, and settle in. During this period, the car's parts adjust and enhance their ability to adapt to the environment, while also wearing down any protrusions on the components. The quality of the break-in process significantly impacts the car's lifespan, safety, and fuel efficiency. The primary focus during the break-in period is to limit the engine's RPM. Excessively high RPM during this phase increases the risk of damaging the piston rings. At speeds between 80-90 km/h, whether in a manual or automatic transmission car, following normal shifting requirements or automatic speed transition points, the engine's RPM remains around 2,500 r/min, and it should not exceed 3,000 r/min. This is the key and essence of speed limitation during the break-in period. The break-in period is divided into three stages: initial, intermediate, and final. During the initial stage, the maximum speed should generally be controlled at around 40 km/h. In the intermediate stage, under good road conditions, the maximum speed can be increased to 60 km/h. In the final stage, it can be raised to approximately 80 km/h. Maintaining a moderate speed during the break-in period is crucial—speed should neither be too high nor too low, as excessively low speeds can increase fuel consumption.
