Originally Posted by GraphiteGhost

Just another comment, you do know the orifice diameter is designed to the medium (refrigerant) in the system, don't you? On another note, nothing like muddying up the A/C tech world like something called industrial 12a (small 'a' per the specs). If the vehicle A/C world is changing the medium used again, I shudder to think how many mistakes are (or might be) made in the field. Oh my, how would you be able to tell what some mechanic put in there? Dang people can't leave well enough alone. I seen a couple of posts on the net about this stuff (industrial 12a). Just more ways to make us have to take our vehicles to some 'stealership'.