Tracer Products has developed a breakthrough fluorescent dye that greatly improves leak detection in all vehicle oil and oil-based fluid systems. Dye-Lite All-In-One full-spectrum dye is the last word in leak detection dyes because it is actually formulated with two different fluorescent dyes. So, no matter what type of inspection lamp is used, Dye-Lite All-In-One dye will quickly pinpoint each and every leak in a system.