Cooling System

[z_herbst]

Thanks ahead of time to anyone who can help me.

I own a 1991 Mustang GT Convertable. Stock everything, 145000 miles. I just bought it 4 weeks ago, I'm still working out all the problems. The previous owner must have treated the car poorly, for when I changed the oil it looked like mud. The oil filter looked ancient.

Anyway, when I got it home that first day, I immediately checked all the fluids, changed the oil first, added a bit of antifreeze, because I couldn't see that it had *any*. Several days later, while taking it for a joy ride since I hadn't driven it much (Still fixxing things), I parked it, and noticed after it had been shut off for about 2 minutes a *lot* of smoke was coming from the hood, I immidiately popped the hood and looking under, noticing the hood and surrounding panels were so hot I couldn't keep my hands on them. Although the temperature guage read "Normal", the antifreeze was boiling and spilling out everywhere through the overflow hole on the coolant reservoir. The antifeeze had turned *brown*, and looked like chocolate milk, literally. THe engine would then not start for another 10 minutes. After driving it home, I parked it till the next weekend, when I emptied and flushed out the entire cooling system, radiator and all. That was last Saturday that I flushed it, I've been driving it again now, but just today it did the exact same thing, the engine compartment heated to a point I couldn't touch it. The antifreeze was boiling, although this time it wasn't brown, atleast, but a dark shade of green. It did start right up this time, though, although reluctantly, not turning over immidiately like it has been. I don't really know what else to do... do I need a new radiator? I'm new to Mustangs, I've always wanted one, but this is my first. please, any help greatly appreciated.