oil pressure relief valve location 68 Barracuda

Oil was 10-40
Oil Filter was a basic FRAM filter, Ring Oiled and installed correctly

I'm tackling the Oil Pump change over this weekend If I get time, I'll update if it fixes the problems

Look inside your Fram filter and see of the inside guts are blown out. I've had that happen to me and don't run Fram any more...

You can see pieces of paper/cardboard/rubber band through them when you look from the bottom of a blown out filter...