I'm seeing this black, oily substance on all 4 of my wheel well fenders, some in the tire well itself and occasional spots on the sides of the LC but not heavy like the fenders. It's definitely concentrated more on the wheel fenders. I crawled under and do not see anything that looks abnormal or leaking puddles. I cleaned the fenders a couple of weeks ago and after a weekend trip, they are just as dirty as before. I've recently had rear main seal replaced, arch pan seal replaced, fly wheel and transmission seal replaced and I'm not seeing anything around those areas...dry as a bone. I also had power steering pump and hoses replaced and radiator. It looks like the power steering pump is a bit wet around it but I'm not sure if that was just from when it was replaced. Any ideas?