When the check oil light came on at 1794 miles, I figured this is no big deal, I'll just add oil. Stupid me! MB doesn't even bother to list the oil specs on the owner's manual, they have an entire separate booklet- the "Factory Approved Service Products (insert date here) ", and the lubricants listed don't appear to be widely available. Has anyone located Mobil 1 SuperSyn, Pennzoil, or Quaker State European Fomula (as specified) in their local AutoZone or Pep Boys? What is the difference between Euro spec oil and US spec oil, besides the obvious "it must be more expensive"? By the way, MB claims that not using the specified oil can cause damage which of course wouldn't be covered by the warranty. Maybe we all should just let them add all fluids as needed. They could even spec MB approved gasolines from the Fatherland.