My 2006 Audi A8L turned 105k last week and gave it a Tune Up. The car has been running quite well, but the oil was replaced 16k miles and the spark plugs at 50k miles ago. I bought 8 NGK BKR6EIX Iridium spark plugs (this should last 60k miles), Mobil 1 0-40w (15k miles), Air […]