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PatrickB,
Does ES-12a leak like R-12?
Would it be beneficial to install barrier hose?
At $6 per can I might not care, but if it helps keep me on the road and out of the A/C shop it might be worth it....?
Thanks
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89 Carrera 3.2 Targa
2011 BMW 335d
2013 BMW X3 3.5
80 911 SC Weissach Coupe (Sold) 
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