. Case of (6) 1 oz. bottles . Ford-approved, fluoresces bright green, requires a long wave UV lamp such as the TP-1600P, TP-1700P or TP-35000 Maxima series. For use with all coolants, including red/orange or yellow extended life coolants . Safe to remain in the system until the coolant is changed Blended leak detection dye for all coolants including Extended Life Coolants. Works with any fluorescent leak detection inspection lamp. Will not discolor the coolant, which can lead to misdiagnosis of engine problems.