Originally Posted by barry12345

Vented crankcases to atmosphere where standard for decades. Actually better is claimed as less acid accumulation occurred. The change was one of the earliest components of reducing pollution.

As mentioned already. I too cannot see it impacting your pollution test. A working mechanic might give a better answer on your thread.
The exception being It might upset the mass air sensor. That is beyond my knowledge limits. Unless you look at the crankcase ventilation system as a closed loop.

Usually as I remember. The manufactures ran a tube down towards the road. Hence the name road tube was heard frequently. Another approach was the oil filler cap had holes in it. Plus some heavy steel wool inside it basically. The oil cap was actually more of a small vented container.

Oil changes where recommended at 1000 miles and some perhaps at 1500 miles. Even after cars got oil filters. Also greasing all the chassis points at the same time was normal.