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.
WARNING: This product can expose you to chemicals including LEAD, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.