Hey guys, please disregard my insane post above... As a new srt owner I had written down all the items that I needed to buy in a notebook, and wrote down 0w-30, which is incorrect, versus 0w-40, which is the correct weight.... So, shame on me, because I even had the correct oil in my hands yesterday, Mobil 1 Synthetic, MB certified, 0w-40, and yep, it was on sale, just like you said. Fortunately, I was able to find the correct Mann fleece filters and copper washers, thanks to the info provided on this great forum. Best regards- bob