The EPA states that the “procedures required for a least-cost retrofit are simple and do not require major component changes. Generally, the process calls for the removal of the oil refrigerant, installation of new fittings and a new label and the addition of either a polyalkylene glycol (PAG) or polyol ester (POE or Ester) lubricant as well as the R-134a refrigerant.”
Check out this video "How to Retrofit a System".
No. The mineral oil in an R-12 system is compatible with either PAG or Ester oil. The original equipment manufacturers have chosen to outfit all new R-134a vehicles with PAG oil. Therefore, since PAG oil is the new OEM standard, our Retrofit kits use PAG oil. These additives enable the system to use the existing mineral oil.
No. Our retrofit kit contains special conversion additives that allow the existing mineral oil to be compatible with the R-134a and PAG oil, so it does not need to be removed. You can see all of our retrofit products here.