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Specifically formulated or use with DEX-Cool (orange). Long life coolant will not change the original appearance of coolant over time. Fluorescent leak detection dye is used in conjunction with ultraviolet and UV/blue light lamps to pin point leak sources in cooling systems.
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89022219 - Gm/Ac Delco Coolant System Tracer Dye - 1 Oz. GM (General Motors)
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