How long can an engine overhauled at a 4S store generally last?
2 Answers
The maximum duration can be up to 8 years. Due to the extreme precision and complexity of engines, repairs can hardly restore them to their original factory condition. Therefore, after a major overhaul, both performance and lifespan will be significantly reduced. How long it can last is uncertain; if well-maintained, with proficient repair techniques and the use of genuine parts, it is not impossible to last another 8 years. Below are five key points for engine maintenance: 1. Use the appropriate grade of engine oil and change the oil and filter regularly (every 5,000 kilometers); 2. Frequently maintain the air filter and replace it regularly (every 20,000 kilometers); 3. Regularly clean the fuel system and replace the fuel filter (every 30,000 kilometers); 4. Regularly maintain the radiator mesh (every 30,000 kilometers); 5. Replace the spark plugs regularly (every 40,000 kilometers or based on driving conditions).
I've encountered many friends asking similar questions after major engine overhauls at 4S shops. Generally, if properly repaired, the engine can last 100,000 to 150,000 kilometers or five to six years without issues. My car, for instance, has been running steadily for nearly four years post-repair. The key lies in the quality of the overhaul: 4S shops use genuine parts and precise assembly to avoid lingering problems. Regular maintenance is also crucial—change the oil every 5,000 kilometers, check the coolant and belt drive system, and don’t overlook small components. Driving habits significantly impact wear; city traffic or heavy loads can accelerate it, so gentle starts and fewer sudden brakes are advisable. For the first three months post-repair, conduct more short-distance tests to monitor oil pressure and exhaust color, and check early if any abnormalities arise to prevent hidden issues. In short, a reliable major overhaul can significantly extend a car’s lifespan.
