Yesterday I took about a 9 hour trip in my 03 Audi A6 Quattro 3.0l. About 3.5 hours in the oil pressure light goes off. I pull over, don't hear in knocking, the oil level is fine, etc. I turned the car off for a minute, started it and when I put the car into "R" the light said okay. Once back on the road it did it about 15 miles later. At this point I stopped to get gas and did the same procedure as what I did earlier. On the interstate I maintained a speed of 75 - 80 mph.
Now I switched to smaller a road and cruised between 65 -75 mph. I did not see the light come on for another 140 miles or so. It went off, I pulled over, turned the car off for a minute and then headed on my way. Did it 15 miles later and then went another 80 miles before I got to my destination where it did it when I got off my exit.
I am running Castrol Syntec 5w-30 that was put in the car 500 miles ago (first time its seen highway since switching to Castrol from Mobil 1) and the weather was between 27 - 35 degrees the entire day.
Any thoughts? Bad light? Can't be the oil pump can it?
Now I switched to smaller a road and cruised between 65 -75 mph. I did not see the light come on for another 140 miles or so. It went off, I pulled over, turned the car off for a minute and then headed on my way. Did it 15 miles later and then went another 80 miles before I got to my destination where it did it when I got off my exit.
I am running Castrol Syntec 5w-30 that was put in the car 500 miles ago (first time its seen highway since switching to Castrol from Mobil 1) and the weather was between 27 - 35 degrees the entire day.
Any thoughts? Bad light? Can't be the oil pump can it?