SLK/R170: Service Intervals
Do like alot of enthusiasts do and either change the oil yourself or have it changed once between the scheduled maintenance visits. That will reduce your interval to 5-6K miles or 1 year, and that's no problem for fully synthetic oil, which is required for all new US-spec MBs.
If you're a do-it-yourselfer, check out the oil change writeups at www.SLK32.com. Otherwise, I suggest you just buy the oil (Mobil 1 0W-40 is recommended, about $5/quart at Wal-Mart or Autozone) and filter ($10 at the dealer) yourself, and take it to a shop to do the work for you.



