Thanks everyone.

I took it to the shop and it turned out to be a bad O ring at the top of the oil pick-up tube. The mechanic described it as like sucking through a straw with a hole in it.

Again thanks for the info.

James

2002 S60 with 62000 miles After about 30 miles, the No Oil Pressure indicator comes on. Stopped the car and shut off the engine fro about 10 mins. I start it back up and the indicator is gone. Proceed down the road the the indicator comes back on after 10 miles or so. Repeat the process and it 's th...