Review on TRACER Spectronics TP39400601 Rite-Blend Extended Life Coolant Dye: Enhancing Water Based Fluids by Joshua Vogel

I knew coolant was leaking but could not even realizing it was hot, I poured paint into the coolant reservoir and drove around to make sure the engine was hot and coolant was flowing. Using the leak detector's LED display, I found a drop of "red-hot coolant" on the skid plate and followed it through the engine until I found a leak behind the water pump. Saved by throwing pieces at the problem.