I'm a duratec guy, but:
At idle: My oil pressure is up around 75 when it's cold. It simmers down to about 25psi when it's warm.
Crusing around at 50mph, the oil is ~50psi (when warm).
Sounds like a normal oil pressure range to me.

Derek Scion xB 5-spd Previous: 2000 Silver Frost SVT Please share the road with cyclists.