I have a 2004 TB EXT with the 5.3, Since I've been lurking in the shadows here I've been watching the gauges like a hawk and had a couple of questions. The Oil Pressure is holding a tick over 40 ever since I changed the oil about a month ago, before that it was at 40 or a tick below. The temp gauge hovers 2 ticks below normal in town but when running the ac or in the mountains it stays a tick above normal. I don't have a reader to get the exact pressure or temp and they're not that far above normal but I was wondering if it is something I should start worrying about. I bought it with 117,000 miles and it has 125,000 now.