I'll agree. I'm not sure of any other easy way to determine if you do have oil pressure, so the valve cover removal was an idea to check that oil was making it to the top of the engine, not intended to be a "fishing expedition". From the sounds that you described (mentioned hearing bearing knock), that would indeed indicate oil starvation, and at the earliest point of lubrication.
It's also difficult to remove the oil pan on these 3.0's, as it may be possible that the oil pump pickup is clogged. From the looks of the engine itself, it appears very clean and well maintained, so I'm not saying the oil was neglected.
What's the mileage on this engine? This may also not be a factor....I have over 215K on my 3.0, and the oil pressure is still good.
Last edited by bucko; 08-28-2014 at 07:39 AM.