What is the correct method for running in a new car at high speed?
2 Answers
The correct method for running in a new car at high speed is: 1. For manual transmission, place the gear in 3rd or 4th gear, maintain the engine speed between 3000 to 4000 RPM for ten minutes, then shift gears, repeating two or three times, but do not exceed the speed limit; 2. Try to do it on highways or flat roads, preferably during the first maintenance when the newly changed engine oil has fewer impurities and is cleaner; 3. Change the engine oil every 2000 kilometers after running in at high speed, and make sure to fill up the tank. Precautions for running in a new car at high speed: 1. The car must be fully loaded when running in at high speed. If you can't find enough people, you can fill the trunk with items; 2. The engine speed should not be too low when running in a new car at high speed; 3. During high-speed running, each gear should be pushed to the redline before immediately shifting to a higher gear.
As a new car owner, I'd like to share my experience with running-in on highways. After one or two months of the initial break-in period for my new car, I chose a sunny day with light traffic. Before setting off in the morning, I checked that the fuel level was sufficient and the coolant was adequate, then drove normally on city roads for about ten minutes to warm up the engine. On the highway, I maintained a speed between 80 to 100 km/h—not too fast nor too slow—keeping a steady pace for 30 minutes to an hour. During this process, I avoided sudden acceleration or braking, driving smoothly to allow thorough break-in of internal engine components and reduce carbon buildup. I also kept the windows slightly open for ventilation to minimize wind noise distractions. After finishing, I stopped at a service area to check the lights, tires, and engine sounds to ensure everything was normal. This highway running-in helps optimize engine performance, making it smoother and more fuel-efficient, but it's important to choose safe road sections and stay focused to prevent accidents.
