Oil pressure question

[nhramnl]

I see your point Ed. Didn't catch that on the first read-through. The question is why does he have 50psi at 2500 RPM on the starting line, then 40-something for essentially the remainder of the run... right? I still tend to think he doesn't have a problem. There's nothing physical to indicate one. Oil sampling shows nothing, and he isn't hurting parts. Also, he doesn't really know if the current circumstances are new or have always been there. If there is any potential "fix" to try, it would be to add a quart and see what changes, if anything. One clue is that he says pressure comes back up at the finish line (I assume after he lifts).