I know myself pretty well when it comes to O2. "Hello, my name is Scott and I'm addicted to O2." Tanya laughs at me sometimes, but on a cross country any significant time for me above about 8k' and I'm sucking the juice. I just feel so much better on the other side. 10k', forgeddaboudit, max flow please. 11k' I'll start to get foggy after a half hour, so you just won't find me there without it. We transfill our own, so I feel like it is nearly free. Our weapon of choice is Mountain High pulse-ox.
by Card Machine Works
RV-9A N4822C flying 2200+hrs. / Cedar Park, TX
RV8 Building - fuselage / showplanes canopy (Done!)