[videosteve]

On my 66 Landau, the oil pressure gauge has some inconsistent readings depending on the what the traffic situation is. At an idle, it reads dead center or just below. At about 45 mph, the needle scoots up to just above the "L" in OIL. At interstate speeds, it moves up to the high end of the normal range.

Is this normal?
If not, what needs to be fixed?
Where is the Oil Pressure sensor on a 390?

Thanks, Steve.