1991 350SD Oil Pressure high at start up - is that normal?

[Blevinsax]

I have noticed that my oil pressure is pegged out at 3 when I initially start the car - is that normal? Once the car warms up a little, the oil pressure goes to normal and fluctuates normally with acceleration, etc. It is always good, though - never ever drops below 1 even when the engine is really hot, under normal conditions it doesn't drop below 1.5.