Tracer Products has introduced a line of universal ester (POE) and PAG refrigerant oils premixed with ultraviolet dye. Specially formulated for mobile A/C systems, these premium oils contain super-bright, OEM-approved Fluoro-Lite® fluorescent dye that is co-solvent free. These Tracerline® dyed oils are safe to use with all types of refrigerants and compressors.