Anybody recharged R134a to your AC? How much did you add? I understand this depends on how low the R134a was before you recharged, I just want to get an idea on how much people add to a working system before it explodes My ac was running ok, not super cold. I had bubbles in the sight glass and I added 12 oz of R134a to the system. It is blowing at 53F duct temperature with 99F ambient, 7 degrees improvement but I am still getting bubbles from the sight glass at 1500 RPM. I think it is still LOW, I would like to hear what other people are doing before I add more.