Reliable Quality BLOCK-TESTER Combustion Leak Detector Fluid

The BLOCK-TESTER™ Combustion Leak Detector Fluid uses your coolant system to detect bad head gaskets and other combustion chamber defects. Works with virtually any liquid-cooled internal combustion engine or generator with a closed cooling system including: gasoline, diesel, propane, natural gas and other alternative fuels.

• Container includes 16 oz. – good for 16 tests using the Combustion Leak Detector
• Can be used with most fluid-based leak test equipment, including the Maddox Combustion Leak Detector
• Works with any internal combustion engine including gas, diesel, propane, CNG and alternative fuel
• Combustion leaks are indicated when fluid turns from blue to yellow
• Non‐toxic, non‐hazardous