Quote Originally Posted by Shingoshi View Post
Can I use R-23 in my Rechi compressors without any concern?
Depends on what oil you have in them. It might not matter as PFC-116 might use the same oils as R23, or they might use different oils, and the PFC-116 in the R-508 is used as an oil carrier.

How can R-717/Ammonia be safely used?
You'll need steel pipes, ammonia is used to remove copper fouling in rifle bores, so it'll "remove" your copper pipes.