The Chairman
Chairman of the Board
If a tank only sees one shop, then PP blending is fine. However, once you start traveling, that O2 compatible air that unfamiliar LDS is giving you, just may not be, leaving an oily residue. Back to your home LDS and once they put the O2 in that not-so-clean tank, you now have poison in a bottle.
I had explained it earlier (see quote). I've been poisoned twice and both were after PP blending. I'm not looking for a third time.I have to admit that this baffles me. Why should PP blending increase the risk of CO poisoning?
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