Revolutionize Cooling with Black Coolant The Ultimate Performance Enhancer

Howdy everyone, I decided to change my thermostat and when I went to drain the radiator I discovered that the coolant was black and somewhat ... You could pressurize the cooling system and see if you have a gradual pressure drop( would be through the hg). Also they have thies small paper ... Black coolant?... 45 views · 5 months ago #engineoil #cars #engine ...more. Walsall Wood Tyre & Service. 664. Subscribe. The issue is this coolant is not really circulated so it has a chance to grow stuff, have oily film buildup, and other things. Only thing that comes to mind is a blown head gasket, though usually you lose coolant. One other thing might be a worn out, ready to replace ... Black coolant can be caused by deterating radiator hoses, crud in the cooling system, and oil getting into the coolant. Not only engine oil from ... Black bottle Usually an indication of leaking head o-ring. Does it build pressure in the bottle too? If the o-rings leak you can push oil into the cooling ... Try draining your radiator to see if there is oil mixed with the antifreeze. That could mean a blown headgasket or other serious engine problems. Black cooling water usually means blown head gasket. Get a mechanic to put in UV Blacklight fluorescing chemical, run the engine, then have the mechanic come ... This sounds like a bad head gasket. exhaust gas from your cylender is being pushed into the cooling system and coming out the tube in your overflow tank.