5 quick operation and Maintenance Qs

When you pulled out the PCV did you feel for puffing out of gases at the valve cover hole? Strong "blow by" is an indicator of worn rings. It sounds like most of the oil loss is seepage from the valve cover and the spark plug tubes of your "drool head" engine. The rubber seals for the spark tubes are very cheap and available, so change those. When you remove the valve cover, make sure the surface is flat and no bulges from over-tightening the nuts. Hammer those flat. Those are common leaks. Read up on valve cover gaskets. Most like rubber, some cork, and I think some just use straight RTV "for a gasket". If you use the later, you will spend hours removing it next time you need to adjust the valves.