What is the difference between fully synthetic oil and semi-synthetic oil?
1 Answers
Synthetic oil and semi-synthetic oil differ in the following aspects: 1. Base oil composition: Fully synthetic oil is blended from Group III, IV, and V base oils, while semi-synthetic oil uses Group III base oil. 2. Replacement intervals: Fully synthetic oil has a service life of one year or 10,000 kilometers, whereas semi-synthetic oil requires replacement every six months or 7,500 kilometers. Engine oil, also known as motor lubricant, consists of base oil and additives. The base oil is the primary component of lubricating oil, determining its fundamental properties, while additives compensate for and enhance the performance limitations of the base oil. Its functions include: 1. Reducing friction and high temperatures; 2. Cooling and temperature reduction; 3. Cleaning and purification; 4. Shock absorption and cushioning; 5. Rust and corrosion prevention.