Thank you!! I really appreciate the information. This is the best thing since sliced bread, the folks here are really top notch, and kudos to all of you for your efforts in dealing with newbies like me. I am new to the diesel, and to mercedez. I guess I will live with the lack of power off the line, I LOVE the car and best of all I LOVE the diesel and the fuel mileage it gets....thanks a million for all your help. I will check the filters, they have not been changed since I purchased the 84.