Audi's Turbos

[Hiok-Tiaq Ng <htng@aries.ece.cmu.edu>]

Hi Everyone,
	My family in Vancouver BC is contemplating an S4, (due to my
incessant badgering) and since my coupe does not have a turbo, I can't
tell them how the turbo's reliability is like. So, I would like to ask
if any of you guys and gals could share your trials and tribulations
about Audi turbos with me. I would not think that it would be a big
maintainence item (provided the oil filters are changed on a regular
basis) because I do not recall reading in the archive about blown or shot turbos.
	By the way, does the S4 have 2 or 1 oil filters for both turbo and engine?
Thanks

Tiaq