When an R-12 is upgraded to R-134a, not much is really changed.CakeDaddy said:so, you upgraded to the the 134? If so, what all do they change out when they upgrade it. Is the compressor included, and what difference did you notice?
Remember venting the refrigerant is illegal.Roger said:im not sure if i have to much or to little to be honest, and i cant really get a good pressure reading. I think im just gonna drain all of it and fill it up according to ounces. How many onces of oil/ r134 or required?