The oil change frequency should be determined based on a comprehensive evaluation of the oil type, mileage driven, and operating conditions. Fully synthetic oil is recommended to be changed every 10,000 kilometres or 12 months, semi-synthetic oil every 7,500 kilometres or 8 to 9 months, and mineral oil every 5,000 kilometres or 6 months. If the vehicle is frequently operated in stop-and-go traffic, for short distances, or under extreme climate conditions, it is advisable to reduce the interval by 20% to 30%. The initial maintenance should be performed within 3,000 kilometres or 3 months to eliminate metal particles generated during the engine break-in period. Note that even if the recommended mileage hasn't been reached, opened oil deteriorates due to oxidation; fully synthetic oil has a maximum service life of 1 year, while mineral oil should not exceed 6 months. Turbocharged engines, operating under higher temperature and pressure conditions, require more frequent oil changes than naturally aspirated engines. It is best to replace the oil filter concurrently and strictly adhere to the maintenance specifications in the vehicle's owner manual.
