Tracy, the reason that pure
Tracy, the reason that pure R134a with dye is suggested in this article is that it is OK to use on a hybrid compressor. It does not change out the ND8 oil that is required for HV isolation. Hybrid repairs can be expensive, yes, but if you use the required refrigerant you will not have an issue. If you are using a refrigerant with PAG oil or anything other than the required ND8 then you can cause a no isolation fault. Give us some credit here, we are not out to send anyone to the repair shop.