I've found it interesting that there are so many opinions on oil and oil pressure. And, even more interesting is the fact(s) that one size doeasn't fit all, so to speak. There really doesn't seem to be many absolutes other than you gotta have oil and oil pressure.
What kind and how much depends upon the user as much as the use, I think.
Also what we do with the engine we put the oil in has a lot to do with what kind, etc. A drag race motor is subject to acelleration loading but not a lot of heat generation (if it's done right). It's also pretty much a one way loaded crankshaft assembly, not being subject to much decelleration or "back loading" on the bearings. So it shouldn't require as much care and feeding as a sprint car or oval track engine, one would think.
99% of the engine failures that I've experienced in drag racing started someplace else, usually a valve train failure or a piston failure (or contact) and then migrated to the crankshaft. I don't think I can look back and see an engine failure that I could contribute specifically to the oil I was using at the time or in particular, an oil pressure loss.
And, I'd bet that most, if not all of you guys here will look back and say the same. Of course there are and always will be exceptions.
The roundy round guys at NASCAR and most of the other oval guys using the Gen III and IV engines are running Joe Gibbs Oil, Amsoil or another zinc loaded synthetic at 0-20 weights . . 8800 to 9300 rpm, on and off the throttle, 300-500 miles and making them live (for the most part). Now they need oil to be a coolant, a lubricant and still suffer no parasitic HP loss in the process of pumping it through a high RPM engine. And they're also using "Sunoco Racing Fuel", which, as of last year, is ETHANOL.
That's a lot more than we Drag racers are asking or needing . . so we ought to be able to get by with murder, and I think a lot of us do . . Just dunno which ones, heh, heh . .