I need some help. For about 2 days my oil pressure is below where it usually is. It used to sit between the R and M of the guage. Now its dropped below the N. Its about half way between the N and the low line. Is there any common thing that happens with Thuderbirds that I don't know about? I checked the oil today. It was fine. It does need to be changed since it has been about 3,000 miles this week. I don't want to drive the car until I know it won't get damaged so if anyone can help I would appreciate it.