Black Buildup on Copper: Looking for Cleaning Solution

Hi, I already asked this in a different thread, but I'm just checking back again in a more direct manner.

Would anyone know how to clean black buildup off of a copper waterblock. The main issue is that I'm assuming it's in my radiator as well. Scrubbing gets it off of the block, but not in the grooved. And the radiator will be impossible to clean using this method.

So, does anyone know something that I can let the radiator soak in for a while that will clean the internals of this black goop when flushed?

I was thinking leaving vineager in it overnight but haven't yet.

I've heard vinegar works. You could also try just some kind of common, household copper cleaner; but I've never tried either method...

I have used vinegar and it works wonders. let is soak for an hour or so and i should be clean and shiny again.

gvblake22 said:

You could also try just some kind of common, household copper cleaner

Click to expand...

Copper cleaner will leave a chemical residue behind that will not be a posative addition to whatever future loops the radiator is used in.

Vinager is the way to go. Ketchup is also a possability, for the waterblock not the radiator.

Run a 50/50 solution of vinegar in your loop and use a filter right before the pump.

Filter? are there retail filters or are you talking about a custom rigged filter?

sunrunner20 said:

Copper cleaner will leave a chemical residue behind that will not be a posative addition to whatever future loops the radiator is used in.

Vinager is the way to go. Ketchup is also a possability, for the waterblock not the radiator.

Click to expand...

Eh, true. Good thinkin'