How Often Should Semi-Synthetic Motor Oil Be Changed?

1 Answers
VanJayden
07/29/25 1:15pm
Semi-synthetic motor oil should generally be changed every 7,500 kilometers. Fully synthetic oil can last up to 10,000 kilometers. Classification of motor oils: Mineral oil, semi-synthetic motor oil, and fully synthetic motor oil. The classification is mainly based on the differences in base oils. Typically, mineral oil uses Group II and III base oils, semi-synthetic oil uses Group III and IV base oils, and fully synthetic oil uses Group IV and V base oils. Lubrication effectiveness of motor oils: Mineral oil performs the poorest, fully synthetic oil performs the best, and semi-synthetic oil falls between the two. Oil change intervals: Mineral oil should generally be changed every 5,000 kilometers, semi-synthetic oil every 7,500 kilometers, and fully synthetic oil every 10,000 kilometers. If the vehicle has been parked for more than three months, it is recommended to change the oil before use.
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