Can someone explain how the service advisor in my wife's SLK operates? I'm really wondering if it works off time, mileage, or both. Heres the story,we bought my wife a new SLK 350 in April of 2006(car rocks she loves it ). She drove it until approximately October when I put it in storage until the end of March(we live in Wisconsin,so it doesn't see the winter). About a week ago the Service B reminder came on and the car only has 3600 miles on it. I know it supposed to have something like a 13000 mile oil change intervial and I had just the oil changed at 1000 miles (old habits die hard). Dealer wants 420 USD for a service B. What gives? Am I looking at this the wrong way or does it seem excessive?