PAG 46 + UV Dye - 250 mL, Vehicle A/C Compressor Oil, compatible also with Electric Compressors, suitable for R134a and R1234yf refrigerant gases, Contains Fluorescent Dye. PAG 46 + UV Dye - 250 mL. Unlock the peak performance of your vehicle’s air conditioning system with our PAG 46 + UV Dye, engineered to enhance the longevity and efficiency of both traditional and electric A/C compressors, compatible with R134a and R1234yf refrigerants.