This is not my engine but in red is where my guy tells me the oil "dye" is. He claims it's not the cam gears. I bought BDE's anyway thinking it was. The only thing else i see is the two plugs on the upper left. I say it's the oil pump, he doesn't because of the oil he claims to be running down the passenger side. He wants to pull off the lower plenum next. I just keep shaking my head. This a really good leak too!