I'm gonna change the oil pretty soon so I'll put some seafoam in the crankcase once I get the truck insured and see if that helps the ticking before I pull the head off. As for the oil pressure, the scale is from 0 to 5.4 with no unit label so I'm assuming it's in BAR. Sits around the 3 at idle (~45 psi). Gauge might be a little off since it doesn't reset all the way to zero.