I remembered a few years ago, after owning the MB for more than 10 years, deciding to check the oil and found it low. I stood and stared at the engine realizing I didn't know where the oil cap was!!! That's one reason I spent $100,000 at THE DEALERSHIP of NEW JERSEY in those 10 years. After that long-winded introduction: What do you guys consider routine maintenance? What is it you check let's say every week, non-fail? Every month? Do you use the MB manual as a guide: Type A maintenance, etc?