It seems the R8 has the same service intervals as the long life audi service–Yes, no audi r8 driver will reach that based on the computer calculating the interval using driving style; still, the long life rarely tells you to change oil within 10,000 miles.
I learnt that extracting the oil is fine if you top up with fresh oil when nothing more comes out of the pan, then resume emptying until the oil that comes out is clean and new. I wonder, though, if little pieces of metal would still be trapped at the bottom of the pan or suspended in the oil.