I didn't do s**t to it, I bought the car for $600 and that's what the radiator looked like when I pulled and replaced it. That's what happens when it has a couple pinhole leaks, it drips and corrodes it away like that. Girl thought or was told it was a bad head gasket. I replaced the radiator and have put 3000 miles on it and it's straight good in the hood. That's what I'm sayin to this guy, check the radiator. There's only a couple things that can make it overheat. Bad radiator or water pump, blocked heater core, stuck thermostat, and blown head gasket. That's pretty much it. Jumping to the conclusion its a blown head gasket without checking everything else is dumb and expensive.wtf lol did u dip it in acid
5 minutes to drain the coolant, loosen two hose clamps and pull them off the radiator, take off the one bolt on the hold-down bracket, unclip the fan connecter and you lift the thing out. In a civic it's SO frikkin easy. And when you're at that point, you can pull the upper radiator hose off the engine, loosen three bolts and pull the thermostat housing off and replace the $10 part. But hey, if you'd rather pay someone $600 to replace something that MIGHT be bad rather than spend 30 minutes doing this to make sure.. it's your money hoss.the car has 238k miles on it and has never had major problems till now i mean it could be that the gasket gave out, i am not sure but i am a college student and i have a part time job. I barely have anytime to work on my car!