Yes. Only Toyota/Lexus have a policy of not using dyes in any vehicle system – this includes A/C, hydraulic systems, etc. That does not mean they believe it contaminates their systems, it’s simply a policy they adopted many years ago. Instead, Toyota/Lexus years ago approved and has been exclusively using our UltraTrace™ non-dye solution.
Virtually all other OEMs use ‘approved’ dyes in their various vehicle systems. And UltraTraceUV® is OEM-mandated (required) in many smoke machines used by OEMs around the world. It’s an excellent method of locating hard-to-find leaks, which often smoke alone cannot find.