96 Seville STS 66,000 mi, mobile 1 10-30, recent sparkplug change, drive my ride maybe once a week with no major problems ever. No problems with starting or no abnormal noises. After 1/2 hour in traffic at a stop light I noticed the low oil pressure light would flicker then come on steady, again no abnormal noises, the light would go away if I rev the RPM's to 1000 but would return when back to normal idle. I also noticed the tempature went up very slightly. STOP ENGINE came on the display a little after that, stoped the car and verfied oil levels/coolent were normal. I descided to let the car cool down and got a beer, hour later drove home with no problems. A few days later I took her out again and same scenario like before at a traffic light. I see other threads recomending replacing the sending unit, I see that if the low pressure light came on once I turned on the engine, but in my case it only happend after driving for awhile. Any suggestions anyone?