I have 2010 e350 6.0 that has an small oil leak at #8 exhaust port. I removed the up pipes and inspected the manifold and found it dry. I ran the engine and found no smoke coming from either bank. Has anyone seen a leak like this, they are complaining about oil consumption but I can't find anything. Back side of turbo and egr cooler is dry as a bone as well. I don't know if that oil leak means anything, any thoughts?