Is Audi Genuine Engine Oil Semi-Synthetic?
2 Answers
Audi genuine engine oil comes in two types: synthetic and semi-synthetic. Below are the differences between full synthetic and semi-synthetic engine oils: Different base oils: Semi-synthetic oil uses Group III base oils, while full synthetic oil is a blend of Group III, IV, and V base oils. Full synthetic oil uses higher-grade base oils compared to semi-synthetic oil. Full synthetic oil provides the best cooling capability and fluidity for engines. Turbocharged engines with more complex structures require higher-quality oil for maintenance. Different replacement intervals: Semi-synthetic oil should be replaced every six months or 7,500 kilometers, while full synthetic oil should be replaced annually or every 10,000 kilometers. Of course, the specific replacement interval may vary depending on the actual condition. Additionally, full synthetic oil has better cleaning performance and oxidation resistance than semi-synthetic oil, so its replacement interval is longer—typically once a year or around 10,000 kilometers.
Actually, Audi's genuine engine oil comes in more than one type, mainly categorized into three groups: full synthetic, semi-synthetic, and mineral oil. The key is to check the certification code on the bottle. For example, the common VW 502 00/505 00 certification indicates full synthetic oil, specifically designed for Audi's turbocharged engines as a high-specification lubricant. During maintenance at the dealership, I've seen technicians' work orders—they typically use full synthetic genuine oil for new car services, given the high precision of German engines which requires full synthetic oil to meet shear resistance and high-temperature protection needs. Of course, older naturally aspirated engines might occasionally use semi-synthetic oil, but the packaging will always clearly state it. I recommend asking directly during maintenance to confirm which certification number is being used.
