which is not available in many States. The engine will burn holes in the pistons apparently unless 93 is used. It's as simple as that and that came from very high up in Audi Corporate.

Christopher Bearman-Director of VIP and Executive Sales, Audi Brand Specialist, A4 and A5/S5 Product Advocate, at Carlsen Audi, Palo Alto, California. E-mail christopher.bearman@carlsenaudi.com.
Current car: 2007 S4 Sedan,Silver/Ebony,loaded with DTM Sport Exterior Pkg.