Intermittent oil pressure/lack of oil pressure

I just put in some 5w-30, sorry didn't see the other post before I got there. It's running great now, oil pressure is back to normal. That was weird, I almost sharted when I saw it plummet this morning! I'm ready to take this girl for a ride! Plus, my wife will be home next weekend from Afghanistan, so I'll take her for a ride or two (in two different places, if you know what I mean!) haha. Anyway, thank you so much for all the input!