Time to replace since corrosion inhibitors broken down.
No, antifreeze is green or pink. If your antifreeze is brown (its rust) you to flush and clean your cooling/heating system. No, antifreeze is green or pink. If your antifreeze is brown (its rust) you to flush and clean your cooling/heating system.
You may have a head gasket problem or a cracked head, engine oil is mixing with the antifreeze.
you got an antifreeze leak
Sounds like you may have a bad head gasket and or a cracked head. Have the cooling system pressure tested soon.
I think that means it fermented or something
You would get BROWN antifreeze, which would be difficult to see rust colors in. The bright green of antifreeze is designed to warn people what it is, because it is harmful or fatal if swallowed.
It is supposed to be red (Dexcool), brown means it got burnt when the engine got hot
If you waited until the coolant is brown you waited too long. Have the system professionally flushed at that point.
prevent
heater core leak
You have a coolant leak.
It means a liquid that resists freezing