EZ-Shot™ Dye Injection Kit Tracerline Universal/Ester dyes are compatible with R-1234yf, R-134a, and other widely used refrigerants. Tracerline dyes can remain safely within the system. . That means once the repair is made, the dye can be used as part of a preventative maintenance program.. FEATURES:. 8 oz (237 ml) . Multi-dose, services up to 64 vehicles. Includes:. EZ-Shot™ Dye Injection Kit: TP9770-8 8 oz (237 ml) BigEZ™ Universal/Ester TP-9749 EZ-Shot™ caulking -style dye injector assembly TP-9747 18” (46 cm) R-134a hose/coupler with check valve & purge fitting TP-9831CS R-1234yf adapter TP9790-BX Yes - LEAD