I just installed a new dry condenser/compressor 3.5 ton unit. It uses R-22
Freon. I silver soldered the tubes in and charged the system and it works
good, but was thinking with a dry unit (not pre-charged like the last one I
bought 10 years ago) do I need to add oil or is it already in the compressor?
I need to know so I don't burn it up.

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