Hi All,
Got a 3.4L V6. Oil pressure is good at startup - both idling and running down the road.
After about 20 miles or so, oil pressure at idle is down - maybe half of normal (oil sending unit and gauge are new). Water temp is slightly over the halfway point. A few weeks after changing oil, the new oil looks like it's been heated - a discolored look.
Does this sound like a headgasket problem? What can I do to tell for sure?