How to Break in a Cadillac XT238 During the Run-in Period?
3 Answers
The driving speed of the Cadillac XT238 during the run-in period should generally be controlled between 50-90 km/h, with the engine speed maintained at 2,000-2,500 rpm. Avoid operating the engine at high speeds. Do not drive with heavy loads during the initial use of the new car; it is best to choose flat roads to avoid significant vibrations, impacts, and sudden braking. Additionally, avoid rapid acceleration. Below is relevant information: Precautions for the run-in period of a new car: 1. Pay attention to gear usage during the run-in period, selecting the appropriate gear based on speed and road conditions. Do not drive at low speeds in high gears or at high speeds in low gears, and avoid using a single gear for extended periods. 2. During the initial driving phase, try to avoid highway driving. Do not drive at full capacity. All components of a new car are freshly manufactured, and the run-in period will generate many metal shavings within the engine. Additionally, the suspension system, transmission system, and braking system are all new parts, and their interfaces are not yet perfectly aligned or smooth. Driving at full capacity will place excessive load on the engine and other components, potentially causing damage. Therefore, during the run-in period, do not exceed 80% of the rated load capacity.
I've been into cars for decades, and the break-in period for a new car requires attention. The first 2,000 kilometers are crucial for the Cadillac XT5—keep the RPM below 3,000, and I cap the speed at 100 km/h on the highway. Be especially careful not to stomp on the accelerator or brake hard; drive gently, like coaxing a child. The tires and brake discs also need breaking in—slow down before turns and brake early for the first 300 km. Avoid loading more than 70% of the car's capacity, and don’t overstuff the trunk. Drive a few dozen kilometers weekly on varied road conditions, mixing city and highway driving to break it in evenly. After 1,500 km, you'll notice the engine running much smoother. Remember to schedule the first maintenance around 3,000 km—an oil change and clearing out metal shavings mark the proper completion of the break-in.
The 4S store repeatedly emphasized a 1,500-kilometer break-in period when I picked up the car. Following the manual's instructions, I deliberately took different routes to work each day, going out of my way to drive on ring roads and through the city. I never exceeded 2,500 RPM, treating the pedals as if stepping on eggs. I tried the highway a few times, avoiding cruise control the entire way and manually fine-tuning the speed between 80 and 100 km/h. The trunk was never loaded with heavy items, with the maximum load being just two cases of mineral water. The most crucial aspect was the engine oil—I changed to full synthetic at 1,500 kilometers ahead of schedule, and the mechanic said the oil was full of shiny metal particles. Now, the car runs noticeably smoother than when it was new, and fuel consumption has dropped from 15 liters to 11 liters per 100 km.
