Tracer Products has made life easier for technicians who service cars and trucks by introducing its new TP-3940 Dye-Lite Rite-Blend blended fluorescent leak detection dye, which can be used for both extended-life and conventional coolants. Approved by General Motors, this specially formulated dye will not affect the color of extended-life coolants, helping to avoid improper mixing and possible damage to the cooling system.