Oil Pressure Question

[Nixon1]

It's at about 50 psi but only when the engine is cold. Warmer it gets, the more erratic and low the oil pressure gets. Usually it sits at the bottom line and during acceleration, usually doesnt go past 30 psi... Never checked it on the throttle...but the pressure stays very low. Someone told me all Fords run on very low oil pressure.... My friend's car registered 0 psi at idle.... That motor ran for over a year...still runs, just like total crap. He swapped it out for a C4 and a brand spanking new 302.