Product Details: Downtime due to A/C system leaks costs your fleet time and money. Don't let inefficient A/C systems impact your bottom line. FleetPride offers the solution: the FJC 4921 R-134a Fluorescent Dye Charge. This superior leak detection dye, designed for R-134a systems, is specifically formulated to quickly locate even the smallest leaks. The bright, UV-reactive dye, combined with the convenience of a single-use, self-sealing can, makes leak detection fast, accurate, and efficient. No more time-consuming guesswork or costly trial-and-error repairs. Simply add the FJC 4921 to the system, run the A/C, and use a UV light to pinpoint leaks. The formula is safe for all A/C components, including compressors, hoses, and seals, eliminating the risk of further damage. The FJC 4921 offers unparalleled ease of use, making it suitable for professional technicians and DIYers alike. Increase your operational efficiency and reduce repair costs by choosing the FJC 4921—the smart choice for fast, accurate, and reliable A/C leak detection. This product is POE Ester based and is safe for use in hybrid vehicles. Order yours from FleetPride today and experience the difference.