low oil pressure

[traindriver]

I need some guidance on this one.

I took SPF1591 on a five mile drive today. At initial start up I had just over 40 psi at the gauge....this was lower than the 60 psi the motor had on the dyno in Ohio, but I'm running 5W-30 right now as it's only 30 deg outside. I starting driving and the oil pressure did not climb really at all with rpm, I know the Smith's can be a little slow to respond, so I continued gently on. As the oil warmed the pressure predictably dropped and stabilized at 18-20 psi. I limped it back home. The gauge on the Accusump captured the same pressure as the dash gauge, so I don't think it's the gauge.

I have a 7qt Canton pan, with check valve, a remote filter and a 2qt Accumsump. I have a total of 9.5 quarts of oil in the car right now, the dip stick reading matches the level at the initial 7qt fill.

Any help would be greatly apprciated...I'm getting very nervous.

Thanks,

Chuck