Some oils have a lower evaporation rate.....Redline being one.
A lower evaportation rate results in less oil being drawn out of the crankcase.
You might check to see if there is a TSB (Technical Service Bulletin) for your vehicle....
For example, 1999 & 2000 3.8L Ford Windstar has a TSB to replace the front valve cover with one that has an improved baffel to correct an issue with too much oil being drawn up through the PCV valve.
I added a catch can to my PCV line.
However, I get very little in the catch can during warm weather.
I get a lot of liquid in the catch can in the cool winter.
I located my catch can at a cooler location, away from the hot engine.
If you draw too much oil up through the PCV system over a long period of time, you can build up carbon in the cylinders, and also gum up the intake.
However, it is SUPER important to have the PCV system working to remove the bad vapors from the crankcase....which helps the oil last longer by removing chemicals that would otherwise cause it to break down sooner.