What is oil pressure supposed to be?

[elgyqc]

FYI.
While looking for something else I came across this in the Technical Manual (my conversions to psi).

"5. Warmup engine to operating temperature (80 - 90 C oil temperature).The oil temperature can be read out with the PorscheSystemTester 2 under the "Actual values" menu.
6.The oil pressure should be approx 1.5 bar (21.7 psi) at idle.
7. Have a second person increase the engine speed to 4000 rpm. Read off the oil pressure on the oil pressure tester. The oil pressure should be approx 5.5 bar (80 psi)."

And I found this post in another thread.

Originally Posted by ike84

... Idiot light comes on at .5 +/- .15 bar. Seems pretty low to me (that could be as low as 4psi). But hey, what do I know...

I calculate that as 5 to 9.5 psi