How to Break in a New Automatic Transmission Car at High Speed?
4 Answers
Automatic transmission new car high-speed break-in methods mainly include: 1. Keep the car under a certain load, which means you can carry several passengers or load some cargo. 2. Most automatic transmission cars are equipped with manual mode. For high-speed break-in, you can initially use the manual mode to shift up one gear at a time. Extended content: High-speed break-in does not mean maximizing the engine speed at top speed, but rather coordinating each gear with the engine speed. Taking manual transmission as an example, for second gear, we should maintain around 4000 RPM for 3-5 minutes, then third gear at around 4000 RPM for 3-5 minutes, and so on.
When I first got my automatic transmission car, I specifically researched the high-speed running-in process. After the break-in period, it's crucial to find a wide, less crowded highway section. I usually start by maintaining a steady speed of 80 km/h for 10 minutes to warm up the engine, then gradually increase to 100 km/h and hold for 15 minutes. Remember to avoid uphill/downhill slopes and curves, and keep a firm grip on the steering wheel. Finally, accelerate in stages to 120 km/h - don't stomp on the gas pedal, and allow deceleration intervals between speed increases. The entire process takes about 40 minutes to fully break in the transmission gears. After completion, remember to check tire pressure and oil temperature - this is particularly effective for extending engine lifespan.
Pulling high speed is not actually about driving fast, but rather to allow new car components to fully break in. My experience with automatic transmissions is: the first high-speed run should be controlled after 1,500 kilometers, and only proceed when the engine temperature is normal. Gradually increasing to 100 km/h and maintaining it for 20 minutes is most effective, with RPM not exceeding 3,000. When encountering long straight roads, try manual downshifting to let the engine operate at different RPMs. Some people mistakenly think they need to push to the limit speed, which can actually harm the car. During high-speed runs, I pay special attention to changes in the engine sound—if it becomes muffled, I immediately ease off the throttle. After completion, promptly change to new engine oil to remove metal debris generated during break-in.
It's quite simple to break in a new automatic transmission car at high speeds. I chose to do it after the first maintenance, heading to the highway after changing the oil. Accelerate steadily to 90 km/h and maintain that speed for 10 minutes, then increase to 110 km/h for another 10 minutes. Keep an eye on the dashboard; if the water temperature or oil pressure shows any abnormalities, slow down. Using cruise control isn't advisable; instead, manually adjust the throttle to vary the speed. The key is to ensure the transmission works fully across different gears, such as manually shifting to S mode on long straightaways. The entire process shouldn't exceed one hour, and remember to conduct a thorough inspection of the chassis afterward.
