Refrigerant System Dye
NOTE:
Fluorescent refrigerant system dye mixed with Polyalkylene Glycol (PAG) oil should never be added to hybrid vehicle A/C
systems equipped with an electric compressor. Addition of fluorescent refrigerant system dye containing Polyalkylene Glycol (PAG) oil will damage the A/C
electric compressor and contaminate the refrigerant system.
A fluorescent refrigerant system dye wafer is added to the receiver drier desiccant bag to assist in refrigerant system leak diagnosis using a Rotunda-approved UV (ultraviolet) blacklight. This fluorescent dye wafer dissolves after about 30 minutes of continuous A/C operation. It is not necessary to add additional dye to the refrigerant system before diagnosing leaks, even if a significant amount of refrigerant has been removed from the system.