I just have to comment on the last two pics. When Troyce first saw this, he said, "there's your leak right there." Meaning, the clean area. A bolt had come loose and fallen out of the hole, allowing the diesel and oil to flow out of the hole, cleaning the area directly below it. It wasn't the oil cleaning it, it was the diesel in the oil. As you can also see, the spewing of the oil coated everything else in a slimy mess. Needless to say, when everything was fixed, a major power washing of the engine was done and now it looks very nice.