Rust, most likely.
change it! though could be mixing with your radiator fluid (green+red=brown) not good
You have a leaking transmission cooler, usually part of the radiator. The transmission fluid is mixing with the antifreeze turning it pink.
radiator antifreeze coolant.
Antifreeze is green in color and is leaking from your radiator .
Green
Green fluid leaking from a car is radiator fluid. "A professional certified mechanic can handle the repair or maintenance needed to fix this issue."
Probably a radiator leak or a split radiator hose.Check coolant levels in the radiator.
An anole can turn green, gray, black, and brown.
It comes in many colors. Green, red, pink, orange, blue, yellow, purple.
Is the colour of the fluid green? or red, or does it smell? that's a definite sign that radiator coolant is finding its way onto your floor from the radiator, and if you let it continue and don't top up the radiator fluid inside the engine bay, your engine will overheat and die. Sounds to me like a heater radiator leak, don't drive the car until you are regularly checking the level of the fluid in the radiator and get it to a mechanic to swap that radiator out for a new one. and in addition get the mechanic to flush out the radiator fluid for new stuff.
No no
They change from green and brown but mostly green like Jeff Hardy's.MaTT HARDYS EYES ARE BROWN!!!!(NOT BLACK)!!!