oil pressure at startup and the fix

It had a lowish quality filter on it as well , when I did the change it was totally empty from sitting. Could have also just been a crap filter
yes. I don't know what brand filter you were running. If you do some Internet research, you'll see which brands to stay away from. Fram oil filters were among the very worst in filtration ability, check valve and bypass quality. Some say they've upped their game, but they lost me as a customer a long, long time ago. I run a full size wix 51515 on most everything(mopar) I can.