Oil level fine. No additives. Level ground. Don't believe its the sensor, you can hear the difference once oil pressure comes up. Could be a clog or pump, but this started almost immediately after the oil and filter change. Also, its fine until the next morning...
I've never had a problem with Fram filters, been using since new (150K plus miles), but I may have gotten a bad one...I going to change as soon as I can.