Tracer’s BigEZ™ Universal/Ester A/C Dye provides fast, accurate fluorescent leak detection for modern automotive air conditioning systems. Formulated for seamless compatibility with ester oils as well as R-134a and R-1234yf refrigerants, this co-solvent-free UV dye helps technicians pinpoint hidden leaks quickly, reducing costly refrigerant loss and service downtime across mixed vehicle fleets. Universal Lubricant & Refrigerant Compatibility: Blends safely with universal and ester A/C oils to service R-134a, R-1234yf, and retrofit systems without risking oil degradation or system failure. High-Visibility UV Leak Detection: Delivers an ultra-bright fluorescent glow under UV light, allowing technicians to locate micro-leaks rapidly and eliminate guesswork during routine inspections. Shop Efficiency & Inventory Reduction: Multi-dose cartridge delivery fits standard injection tools, streamlining service workflows across diverse vehicle fleets while lowering shop overhead costs.