Had the car towed in to an independent shop. The guy tested the oil pressure with a mechanical gauge and there is strong pressure. That was a relief. He the removed the cluster and tested the wire connection it tested fine he reassembled the cluster and the problem went away! Sounded like a bad connection at the cluster side with oil pressure sender wire. i hope that was the end of it. Cost me $68 (1 labor hour + $55 tow). Happy it wasn't pressure problem! Had to tow it in for a piece of mind. Thanks to all your help.