Oil system myths

the oil is sucked from the pan as it is a positive displacement pump. here's one of many simple explanations readily available online Oil Pumps
as opposed to how a centrifugal pump works https://www.dultmeier.com/technical-library/how-does-a-centrifugal-pump-work.php
neil.
So if oil pumps don’t operate off creating a lower pressure on the intake side of the pumps than when a drag car does a wheel stand there is no oil pressure till the front wheels hit the ground in the case of a BB or Hemi or SB Ford? And rock crawlers do without oil pressure as long as the pumps un covered? The spinning gears create negative pressure on the inlet side. Now you believe what you want to believe. As a hydraulic engineer for or 19 years, I’ll go with my beliefs. Done over and out.