I have had this 4.6 for a short time, and while I was installing my NOS system I noticed that the driver side valve cover was slightly covered in oil. I have read a few post that this is cank case pressure essentially turning the air inlet behind the air meter and before the TB into an oil pressure outlet - and especially on superchargers. In the post though no one could agree on the use of an oil breather cap where the old oil cap went and leave the PCV and inlets set up or what ever else. I live in and non emissions state and dont even have cats... how are you guys handeling this, using a spill tank, breather cap, better hose clamps? and do you have pictures? Any help is appriciated, one guy said his breather cap blew out the oil there and didnt really fix problem? Its only got 20K babied and stock miles so I dont think the rings or pistons are shot , I think it just happens a little at WOT.