All has to do with engines, have ran PUP/PP 0W20 & 5W20 at 38 miles one way doing average 78 to 80mph in my Acura in signature with 5000 mile OCIs and "never" had any consumption. Different strokes for different folks.
Engines have a lot to do with it, but so does load.
I can run up and down a flat highway at 80MPH and never burn a drop, but then drive 80 MPH though the high desert climbing long hills and pinning the throttle for significant time periods and or hitch a 5K boat to the pin and big surprise consumption occurs.