How often should car engine oil be changed?

[PatrickDella]

Engine oil should be changed every 7,500 kilometers or 6 months. The oil change interval depends greatly on the quality of the oil and the vehicle's operating environment. If the vehicle uses full synthetic oil, it's perfectly acceptable to change the oil every 10,000 kilometers or 12 months, provided the vehicle hasn't been driven excessively long distances. Introduction to car engine oil: 1. Functions of car engine oil include reducing wear, cooling and temperature reduction, sealing and leak prevention, rust and corrosion protection, and shock absorption. 2. Car engine oil, also known as motor oil or engine lubricant, is a substance enhanced with additives in base oil, mainly containing anti-wear additives, detergents, dispersants, and multi-grade oil viscosity index improvers.