So I drove the Jeep yesterday for the first time in a week. Noticed the oil pressure reading 65-70 and then dropping back to the normal 40 where it has been since new in 2004. It was a quart low on oil. Topped it off and still is doing the same. No noise or anything else out of the ordinary. Wondering if the sending unit may be going out, it does have almost 175,000 miles on it now. Anyone have any ideas?