75630 Test Fluid

Detects combustion leaks on engines, Fluid changes from blue to yellow when exposed to combustion gases, Contains 16 fluid oz, Used with Lisle 75500 Combustion Leak Detector, Operates on engine vacuum with silver breather, Can be used with hand vacuum pump using red breather, Tapered plug fits all radiators, Easy to use and store, High-quality and reliable, Fast-responding to combustion gases