Why Do Cars Need to Be Driven at High Speeds?
2 Answers
Driving a car at high speeds helps the engine and transmission adapt more quickly to high-speed operation, improves the smoothness of components such as pistons and gears, and also aids in removing carbon deposits from the engine, especially for vehicles frequently driven in congested urban areas. After the initial break-in period, the operation between engine components becomes more coordinated. At this stage, driving at high speeds can test the machine's extreme working conditions and expand the tensile, compressive, impact, and torsional resistance range of the component materials. Performing high-speed driving after the first maintenance service is safer, as the primary purpose of the first maintenance is to conduct thorough inspections of the vehicle, ensuring better safety measures are in place.
The so-called 'high-speed driving' is mainly about cleaning carbon deposits in the engine. When we drive in the city, frequent stop-and-go at low speeds leads to incomplete fuel combustion, causing carbon buildup to clog the engine. Taking a long trip or revving the engine on the highway can increase the engine's RPM and temperature, effectively burning off those deposits. This not only restores the car's power response but also saves some fuel and avoids major repairs in the future. I occasionally drive back to my hometown on the highway, and the car feels smoother afterward. With the carbon deposits cleaned, the spark plugs are less likely to have issues. This is a must for long-term maintenance, especially for older cars—I recommend doing it once a month instead of always driving in the city. It's a simple, cost-free trick, but it's crucial for engine health.
