How often should the engine oil be changed for a newly purchased car?

[DiJoanna]

Generally, the engine oil change interval is between 5,000 to 10,000 kilometers or every six months to a year. The recommended maintenance schedule can be found in the warranty certificate that comes with the car purchase. Engine oil, also known as engine lubricant, serves multiple functions such as lubrication and wear reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, and shock absorption. Below is an introduction to engine oil-related information: 1. There are 4 types of summer oils, 6 types of winter oils, and 16 types of all-season oils. The summer oil grades are: 20, 30, 40, 50, 60. The larger the number, the higher the viscosity and the higher the maximum applicable temperature. 2. The winter oil grades are: 0W, 5W, 10W, 15W, 20W, 25W. The letter 'W' stands for Winter. The smaller the number before 'W', the lower the viscosity at low temperatures, the better the low-temperature fluidity, and the lower the minimum applicable temperature.