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I believe I've got it figured out. Thanks to all for your help. The EPA link provided by Fishslayer was especially helpful. It looks like I've got Freeze 12 fittings on
it. I'm surprised because I knew that the PO's shop(he's parts mgr at indie MBZ
shop) used freeze 12 but there was no conversion decal on it. PO was pretty
meticulous at record keeping. I also had called my supplier, who sells several
refrigerants(including freeze 12), explained my setup and he acted like he had
never heard of a larger fitting. I"m attaching a photo of some r12 to freeze
12 adapters that look exactly what I've got. Apparently I was wrong about the
initial sizes. It looks like the lo side is 1/2" and the hi side is 7/16". Now that I know what I've got, I'll probably go ahead and drain,evacuate and do a full
recharge with R12a.
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1980 300SD (China Blue) 262K
1980 300SD (Light Ivory) 137K (NEW!!)
1980 300SD (Silver) Parts
2007 Ford Escape Hybrid
1978 Yanmar 155D
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