What is the difference between semi-synthetic and full-synthetic engine oil?

1 Answers
NevaehFitz
07/29/25 2:46pm
Here is a detailed introduction to the differences between full-synthetic and semi-synthetic engine oils: 1. Different base oils: Semi-synthetic engine oils use Group III base oils; full-synthetic engine oils are a blend of Group III, IV, and V base oils. 2. Different applicable vehicle types: Full-synthetic engine oils are suitable for turbocharged engine models, while semi-synthetic engine oils are suitable for naturally aspirated engine models. 3. Different replacement intervals: The replacement interval for semi-synthetic engine oils is around 7,000-8,000 kilometers or 8 months, whereas full-synthetic engine oils have a longer replacement interval of about 10,000 kilometers or 1 year. 4. Different costs: Full-synthetic engine oils have higher manufacturing costs and are more expensive, while semi-synthetic engine oils are relatively cheaper. 5. Different performance temperature ranges: Full-synthetic engine oils offer better high and low-temperature performance compared to semi-synthetic engine oils and have a wider applicable temperature range.
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