Posted 7/26/2014 00:39 (#3986236) Subject: R12 to R134
NCSD
Have a system of r12 that is a little low. Thinking of adding a can of 134 just as an experiment to see what happens. (Don't use this rig that much anymore). Who else has done this?? What happened?? I know I should vac it down, change oil etc. but just don't have the time/tools required.
R12 to R134
