What is the optimal speed during the break-in period of a sedan?

[McGriffin]

The optimal speed during the break-in period of a sedan is within 60-100 km/h, with the engine speed not exceeding 3000 rpm. Here are some additional details: 1. The initial break-in period is 1-500 kilometers, during which the maximum speed should be below 70-80 km/h, and the engine speed should not exceed 2200 rpm. 2. The mid-term break-in period is 500-1000 kilometers, during which the speed can generally reach 90-100 km/h, and the engine speed should be below 2500 rpm. Extended content: Precautions during the break-in period of a new car are: 1. Warm up the engine before starting. Warming up the engine actually provides sufficient lubrication time for the engine. 2. Start smoothly. A smooth start and gradual acceleration allow the engine to adapt better. 3. Avoid high engine speeds. Generally, for the first 500 kilometers, do not exceed 80 km/h and avoid driving on highways. 4. Do not maintain a single gear for too long. If driving an automatic transmission car, it is necessary to run in the transmission and engine by controlling different speeds.