1)No, I haven't looked to see what the owners manual says
2)No, I haven't pulled the dipstick and checked the level yet.

This is a phenomenon I've noticed before, but during my commute in this morning I paid a whole lot of attention to, and it got me curious. I'm talking about my oil pressure. I have an analog oil pressure guage. It's pretty common, I'm sure we've all seen them. It looks something like this:

L / | | | \ H

With a needle that swings across the tick marks indicating the pressure.

Common, no??

Anyway, here's what I'm noticing....When I first start my truck up in the morning, the oil pressure is up at about the 75% mark towards the high pressure side. This is at idle (1100 RPMS). When I pull out of my driveway and go through the neigborhood, even at low speed/low RPM's, that sucker gets well up around 95% of the way to 'High'. I'm talking about 2k RMPs and 25mph going up a slight incline.

As the engine warms, it begins to drop a little bit. By the time I've gone a few miles down the road, pulling out into an intersection, getting it up to just over 3k RMPs and the needle probably only gets to 80-85%. If I'm maintaining speed on flat ground it will hold steady at about 55% at 1500 RPMs, assuming the engine is warm. Give it a little gas though and the needle jumps back up again.

Now...I've owned a few vehicles in my day, and I've seen the oil pressure guage move when you're giving it a little gas, but I've never seen one that swings this wildly. A few hundred RPMs and the guage just jumps

So I understand that when its cold outside and the engine is cold, the oil is thicker, that can account for some of it, though I did think modern motor oils were supposed to retain their viscosity pretty well. In fact, I can justify pretty much all the changes mentally. The question I have though is should I be trying to justify it? I'm just not sure if this much fluxuation is 'normal' or not. The truck is new, so if it is a potential problem, I'd like to nip it in the bud.

Thoughts?