Hey, I've been driving the Stang recently since I'm home for a bit and noticed that the oil pressure hangs around the O in Oil while at idle than climbs to nearly past the L when driving (doesn't matter rpm, just climbs) then drops back down to the O while at a light. I don't really remember it being like this, but last time I drove was in December. It's a 66 289 4bbl with original gauges, which I know aren't accurate. With the planes I fly, they tell you what to look for in fluctuating oil pressure or if it's out of limits, wish cars would do the same. Thanks for any help.