funfly
Talk to your licensed engineer or PFA inspector as applicable and ask him/her to show you the pressure relief value on your engine and ask for them to adjust it for you.
According to my Lycoming Operators Manual:
Max oil pressure for normal operation is 90 psi
Min oil pressure for normal operation is 60 psi
Idling 25 psi
Max oil pressure for start and warm-up is 100 psi
Min oil pressure for start and warm-up is 55 psi
Idling 25 psi
The engine should be operating within this limits, ideally somewhere near the middle of the green arc (between 60 and 90) in the cruise to allow a margin each way.
100 psi is outside normal parameters.
Best
KZ8