Hi Oli,
yeah, that's a nice summary, you've given.
Audi dealers themselves got an advice by Ingolstadt to do the oilchange every 60.000 km. But unfortunately that happened some years after selling the A8.
Chris.
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Audi S8 manual, 1996 <- much fun
Kawasaki ZX9-R 2001 <- much more fun
always remember:
ficken!