[VeNuM]

Ok, I was sitting a light, and my oil pressure starting dropping, so I turned off on a road and when I started moving (revving the engine) the oil pressure went up to where it normally is (and never moves from). Anyways, anytime I let the car idle, the oil pressure goes down to just under half way (I know the factory gauges suck, I'm hopefully getting an Autometer one soon, just tryin to save for this winter's project, my 331. Any ideas why this is doing it? I've parked the car until I can get a straight answer, so the sooner I can find out some info about this the better!