Coolant
The way today’s cooling systems are designed, coolant leaks can be tricky business to diagnose. Dye-Lite®Application-Specific Dyes for water-based fluids makes the job much simpler. For older vehicles or vehicles using aftermarket coolants, use our best-selling TP-3900 universal formula. For newer vehicles with factory-filled extended life coolants, choose between our Ford-approved Clear-Blue™ or GM-approved Rite-Blend™ dyes.