Re: R12 Replacement?
I would recommend keeping it R12 if he can. There is still a lot of it available, you can get your EPA license online and even do it yourself. With R-134a, you have to change oil type as well. I like to keep the original systems the way they were designed to operate, and they will practically blow snowballs in July.
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'68 H/O W45
'70 Cuda
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