Why is it necessary to change engine oil regularly?
3 Answers
Regular oil changes are necessary because engine oil contains various additives that effectively protect the engine's crucial moving components, ensuring proper engine operation. Over time, all performance characteristics of the oil deteriorate, hence the need for periodic replacement. In addition to regular oil filter changes, the fuel filter and air filter should also be replaced periodically - the standard being every 20,000 kilometers for the fuel filter and every 10,000 kilometers for the air filter. Engine oil is the lubricant used in engines, composed of base oil and additives. It serves multiple functions including lubrication and wear reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, as well as shock absorption. The base oil constitutes the main component of lubricants, determining their fundamental properties, while additives compensate for and improve any deficiencies in the base oil's performance, imparting new characteristics, making them an essential part of lubricants.
Having run an auto repair shop for thirty years, I've deeply understood the importance of regular oil changes. Engine oil acts as the lubricant for your engine—when fresh, it flows smoothly, reducing friction and wear between components. Over time, however, it oxidizes and thickens, accumulating dust and metal particles, losing its protective qualities. Neglecting oil changes can lead to engine overheating, increased fuel consumption, and even severe damage to critical parts like pistons and crankshafts. It's recommended to change the oil every 5,000 to 10,000 kilometers, depending on the type—mineral oil requires more frequent changes, while synthetic oil lasts longer. Saving a little on oil changes can prevent costly major repairs. I've encountered many car owners who regretted skipping oil changes, ending up with repair bills in the tens of thousands. Remember, your car's health starts here—regular maintenance ensures longevity.
As an ordinary car owner, I have personally experienced the troubles caused by engine oil issues. Last year, I was too busy and forgot to change the oil, delaying it for 8,000 kilometers. As a result, the engine started making abnormal noises. When I took it to the shop for inspection, the mechanic said there was severe internal wear. Engine oil not only lubricates but also dissipates heat. When dirt accumulates, it can clog the system, leading to performance degradation or even breakdowns. Changing the oil on time can extend the car's lifespan. Spending an average of 200-300 yuan on maintenance brings peace of mind that is far more valuable. Now, I make it a habit to check the oil every six months or after driving 6,000-7,000 kilometers. Since adopting this routine, the car runs much smoother, and fuel consumption has stabilized. It's really like getting a health check-up—prevention is easier and cheaper than treatment.
