The Ultimate Guide to Black Coolant Keep Your System Running Smoothly

You may have soot in the coolant from the combustion process. Just a guess, soot is black. How, without other symptoms, I don't know. The black/dark stuff in your coolant. As you can see, the oem purple coolant migrates towards a dirty pink color as it ages. A precipitate can form as a reaction between some antifreeze corrosion packages and that of the WaterWetter. It isn't harmful, it can form in ... these engines are known to have excess casting sand in the block left over from when they cast the blocks at the manufacturer. if the coolant ... If your coolant is dark, looks brown, or you see particles floating around, it's time to for a flush and fill. Save at your local NAPA AUTO ... I had that too. You can drain it out of the reservoir and put clean water in but in a few days the black will be back. The cure for me was a new ... 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 ... I replaced my water pump this weekend due to it seizing up and breaking off all the belts. When I drained out the coolant from the radiator, ... I am just draining out the green coolant we put in this spring and it is now as black a coal. Does anybody have any ideas what would cause this? Black in the coolant is not a good sign . Would say as above,, oil from the engine,, or the auto box is mixing with your coolant.Some auto boxes ...