Original Message

LOX is the way to go, you'll find that 90% of your PT's don't need to be flown so the med crew puts them on O2 to make in look like they did something, so alot is used unessarally. So you land and the first thing you have to do is fill O2 because the med personal can't be trusted fill it. The concept of knowlege of ," Righty tighty, Lefty losey", are not understood by them.