How often must car engine oil be changed?
1 Answers
Engine oil maintenance intervals are determined by two criteria: mileage driven and time in use. Whichever comes first necessitates maintenance. The details are as follows: 1. For mineral oil, maintenance is required every 5,000-7,500 kilometers or every six months. Semi-synthetic oil can be maintained every 8,000-10,000 kilometers, while full-synthetic oil can be maintained every 10,000-15,000 kilometers or once a year. In other words, except for mineral oil which requires maintenance every six months, synthetic oils are all maintained once a year. 2. The longer service life of synthetic oil is mainly due to its more stable molecular structure and stronger oxidation resistance, allowing synthetic oil to last longer and reach a maintenance interval of once a year. 3. Mineral oil can only achieve a maintenance interval of every six months. The specific maintenance time should be determined based on the type of oil used.