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When I got my Refrigerant Handling Certification from MACS many years ago, we were sworn to use a proper recycling machine, which captured everything and filtered out air, oils, and moisture. The refrigerant could then be re-used for the same or different vehicle. This was the transitional time, and there was much concern of a cheap "retrofit" DIY job ...


There is no difference between brands of R134A, unless there is some additive in it which will be stated on the label. Some include leak sealer, never use this, ever. The only real difference is Price.


I ended up using one of the can taps that attaches on the top, with a metal cap containing an O-ring so that the can could be sealed at the threaded connection, beyond the minimal level of seal provided by the tap. I was surprised at the lack of actual locking in the "clamp" that attaches around the neck of the can, though. It feels like you could knock it ...

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