Audi S8 4.0L TFSI Oil Capacity Capacity 8.7L (9.2 qt) Audi S8 4.0L TFSI 520hp 8.7L (9.2 qt) Use synthetic oil SAE 5W-40, SAE 5W-30 or SAE 0W-40 Contents hide 1 Share this: 2 Like this: Share this:TwitterFacebookLike this:Like Loading...