2001 Mercedes-Benz SLK320 Q&A
2001 Mercedes-Benz SLK320 Question: What's the recommended 60,000 mi service, and about how much will it cost?
I'd check the spark plus and engine belt out around 60k. Might also want to consider coolant/trans flush. Sounds like you are already on top of things with the oil/filters. - Cory Langner