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I dive an old (approx. 15-20 years old) Oceanic reg which as far as I can tell is an Omega or at least Omega style. The second stage is red and it looks like a little shower head.
I'm thinking about doing the nitrox cert and it occurred to me that a reg that old may not be happy with the extra O2. The reg has been shop serviced regularly. Can anyone confirm/deny the nitroxability of old regs like this?
All Oceanic regs are good to 40% if regular service has been done. Frankly most any reg is. The extra O2 of EAN up to 36% will have little if any effect. Only if you were using if for a deco reg of 80-100% would I make sure all the orings used are O2 compatible and use O2 compatible lube. So no worries man. Go for it.