I need to re-charge my a/c after being completely empty. I was thinking about giving this Z134A stuff a try. It seems a lot cheaper and is compatible. Has anyone tried it? Here's a quick comparison I did: https://www.amazon.com/ZeroR-Z134-R...1190763&sr=1-8&keywords=R134A#customerReviews From their ad: ZeroR Z134 is an R-134a replacement. Z134 is a natural non ozone depleting formula unlike R-134a that is being phased out. Z134 is a 6 oz can equal to 16 oz of R-134a. Z134 has a higher operating pressure which requires less liquid. See our conversion chart for more information. ZeroR Z134 is a flammable product but is safe to use and will not cause your A/C system any harm. Cans have the same thread as R-134a cans making all tools interchangeable. Contains less than 1% of non uv dye and is not significant enough to leak test a system.