New to the site so I thought I would add an oil analysis from my W210 2000 Mercedes E55 AMG. Just a little background on the car... I purchased this on ebay spring of 2018. From the condition received it, I would assume that maintenance was starting to be ignored. I changed the oil when I got it using an OEM filter and Mobil 1 0W-40 European Formula. I drove it for about 4000 miles and changed the oil in the fall before I stored it for the winter (these cars are notorious for rusting). The silicon could be from when I changed the valve cover gaskets including the oil breather covers that require using RTV sealant. The iron I'm not too concerned about. We'll see what the next analysis has.