gmcpanel, is it possible that my 53 1/2 ton gmc 228cu is a factory setup as it has an elbow in the VC with a rubber hose to a pcv and then to a connection in the intake manifold? (there's no mod to keep it from sucking oil. it does suck some, using the road draft tube as the inlet for the air flow but it doesn't seem to matter to the engine. i think it like burning a bit of oil.
tony

Overland Blue, 1953 GMC 1/2T, 100-22, 228/1bbl, 4sp/4.10 6v, shortbed/fender side/5-window.