Coolant is meant to be green right? If it is, mine is brown, what is wrong with it? The car overheated the other day aswell. Is there anything wrong with the coolant system or radiator?
Good Flush & replenish with 5yr red would be appropriate - have you checked if your level is ok and if your fan is cutting in ok?
@Lesmott - There is way to much, i have no idea why, and the fan cuts in normally, nothing wrong with thatHow hot did it get when it overheated? Was it brown before the overheating episode?
Sometimes, a serious overheat will loosen off all the brown gunge off everything and that's what makes the water look rusty. Kind if like running a really hot wash through the engine. Drain, flush, refill, drain, flush, refill, etc, etc, etc, and you might get back to clean water again. New anti freeze required once you're done, obviously.