Q&A

The valve cover gaskets may in dead be leaking. The PCV valve may be restricted causing excess crank case pressure or you could have blow bye (cylinder leakage test may confirm that. Mileage is low to expect engine problems. We sometimes use a "smoke machine" generates inert smoke into the crankcase you see where the leak is by where the smoke comes out. You could also use dye in the oil that can be viewed using a black light to see where the leak is. Perhaps try tightening the valve cover bolts. Replacing both valve cover gaskets and washing down the oil leak is about 3 hours labor.