The bearing clearances in a freshly overhauled engine are as tight as
they will ever be. And the oil pressure is as high as it will ever be.
If it's in the green, fly it.

Thomas Ploch wrote:
What about high oil pressure. My factory zero time O-235C1 is running
at around 90 psi in cruise. This is at the very top of the allowed
range.

Oil Pressure Limits - (Normal operations) Minimum 60 p.s.i. Maximum 90
p.s.i.
(Idling 25 p.s.i.)
(Starting & Warm-up) Maximum 100 p.s.i.

Is this a problem?