>Well, that's interesting. AFAIK, all dealers are now supposed to use one of
>the oils that were referenced in AoA statement provided by BillyRay,
>regardless if you choose to change it every 10K or every 5K or every 1K
>miles, or whatever. You do understand that Audi will only pay for the 10K
>changes, so if you want it done more often, you'll have to pay for it
>yourself.
>


the dealer in Colorado Springs still uses Castrol GTX (conventional)
oil with 10K changes (at least for my 2.8L V6). I always pay the
extra and get synthetic (they offer Belgian Castrol Syntec 5W40).



>Since you don't have a turbo, I'd say 10K mile changes with synthetic oil
>are fine, or at least once a year, whichever comes first.
>
>AFAIK, the car comes filled with Castrol SLX 0w-30 (full synth.) from the
>factory.
>


that is also my understanding.