I have a 530i just recently removed intake manifold to change seals and the infamous "No Return Valve" and the leaking "O" rings. There was alot of oil in there I cleaned up most of it and vacumed it clean, but it still seems like its leaking, as there is fresh shiny oil puddles in the crevices and I can still smell it burninng when engine is hot. Did I miss something? Is there a gasket on that cover under the coolant lines?
Also, does anyone have any photo's of the Oil Filter housing from the side, probably with the engine out, as anyone who owns one of these, there no seeing anything around there unless you remove lots of stuff. It feels like theres one of those rectangular electrical connections - without a connection.