Audi recommends Castrol EDGE Professional OE engine oil to lubricate and protect Audi engines according to each engine’s individual requirements. Developed for a wide range of Audi turbocharged V8s, high-revving V10s and diesel engines, our recommended engine oils maintain protection for 1 year and 10,000 miles under normal operating conditions.
The recommended oil is noted by a specification number (e.g., 508 00 for 0W20 Long Life IV and Fuel Economy). Together with Audi, Castrol research and development aims to make improvements in fuel economy and reductions in CO2 emissions to help prevent the formation of harmful deposits, while helping to keep your vehicle’s engine running smoothly.