Low oil pressure?

brian6pac said
O.K. I think you guys are thinking it all wrong,
1) You have a oil pump pumping oil, it will not make pressure till it hits a dead end, and that is the bearings. If you change your oil and filter and start the engine there is no pressure till the filter fills up the oil is pushed through the engine and hits the bearings, now it has pressure.
2) You are talking about the filter draining back, oil looping in and out of the filter and this is impossible without a hole back to the pan, the pump wont stop pumping oil even if there is no pressure and it will fill the engine galleys and it will hit the bearings at the end of the line. Then and only then will it drain back in the pan to get picked up again.

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If you think there's no oil pressure until the oil hits the bearings you are just so wrong.
The only reason I put a red X on there is because I disagree with you.

fluid pressure. noun. the pressure exerted by a fluid at any point inside it. The difference of pressure between two levels is determined by the product of the difference of height, the density, and the acceleration of free fall.

Every turn of the passage every downsize of the passage causes resistance which builds pressure. If it comes to an open area then the pressure drops.
How about we get back to solving this guy's problem instead of discussing this plug.