▪️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
