Hi everyone.
I just bought an A3 Spotback 1.6 2006 (8PA AA4 version from the sticker) in very good shape and would appreciate your wide advice on tricks, extra maintenance and anything else you can think of.
I will do a full service next week, so my first question:
I've always preferred Quantum oil to the recommended Castrol. What do you think?
Quantum platinum 10W40? The manual only states VW 503 00 or VW 504 00.

Second question if I may:
Before I go on the hunt, where's the fuel filter on this car?

And finally: I looked at the toothed belt and it seems too easy to replace than any other Audi I owned before.
Is it really easy or there's a surprise waiting when replacing belt, pulleys, tensioner and water pump?

Thank you in advance for your assistance.