Still working on the finishing touches on my 06 I purchased just after Thanksgiving. I changed the brake and power steering fluid yesterday and am ready to flush the antifreeze as soon as the thermostat arrives next week. I also replaced the cabin filter and brushed the dirt out of the fan and housings. My cabin filter had been changed but I think only once. It had a Mercedes filter but it had a date code of 10/06 that's after the car was manufactured but only by 2 months. Guessing it was on the shelf for a while.