Hello, 2007 with approx 170k miles. I have some oil dripping from somewhere in the back of the engine midway up on the drivers side. Any idea of the possible culprit? It is a very difficult area to see and troubleshoot. I looked from the bottom and can see where oil has dripped, but not the source. Impossible to see from the top. See photo below for better understanding - looking at engine from drivers side - you can see some oily gook accumulating on the green connector (red arrow) so I think the leak is ahead of that up under that mess where they bent red arrow is pointing. Valve cover gasket? Head gasket? or is there some other oil producing exit hole in there somewhere?