Matt W. Barrow wrote:
"Dan" wrote in message
...
So short of doing your own transfilling, where does everyone get cheap
O2? Or are you paying big bucks at the FBOs? For an occasional user,
the transfilling equipment does not make sense.

An Oxygen optimizer (i.e., Mountain High or Aerox)

I think you mean Precise Flight (Nelson).

Aerox doesn't make one to my knowledge.

I've got the Precise Flight and it definitely does extend
the bottle by a substantial amount. The MH I hear is good.
They've addressed the major concern I had when I was comparing
it against the PF one several years ago.