Unleashing the Power of Black Coolant A Step-by-Step Guide to Enhanced Cooling

I would try a little dishwasher soap (low suds) for a flush. Any time I have seen black it was from either a combustion leak or a oil cooler ... You need an invitation code to register! To obtain an invitation code, please e-mail [email protected] with a reason why you want to join. 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. 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 ... The coolant reservoir tank's clear tube to view volume level is not so clear, so I cannot see the level of the coolant in the tank. Yup. Oil pressure is 80+ psi, water pressure 15 psi max. So... generally when there's a breach between the oil gallery and the coolant passages ... 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 ... Coolant going black is an indication that the coolant was not mixed before it went into the engine....if it is a 50/50 mix it should be done ... 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 ... Dark coolant might mean a seal gone bad in the waterpump. It could cause the coolant to mix with the engine oil a tad. Check your weep hole and ...