Black Inside My Blocks........gaww.......

[NaeKuh]

this is what happens when you use a kill coil instead of ethylene glycol

I hope this is sarcasm... now that i reread it..

Because if its not sarcasm... continue...
why does a kill coil turn copper black?
Please tell us why? Copper and silvers reactivity is so low, that it would take 100 yrs for him to even start seeing corrosion on copper + silver.
So tell me WHY antifreeze is the answer to all? Because antifreeze is honestly CRAP.

I can tell you what Ethyl Glycol does, it clumps til no tomorrow if your using a block with slit injectors, like 80% of all the blocks out now.

And when it clumps, it clogs, and it looks like mystery jelly.

And the reason why they use it in cars and not computers now, is because in cars you dont have slit injectors which is fed antifreeze.

So b4 you say something really uneducated like this, support your evidence with facts.

There are still oxygen in water when add ethylene glykol ? and thermal wise pure water transports heat better than ethylene glykol and black surface on Cu doesn't make it worse

Ignore him. It has nothing to do with you adding ethyl glycol.
What probably happened is you had a increase rate of oxidation.
That is what that black color is, and no amount of antifreeze would prevent that, as its more related to bubbles.
And antifreeze for one causes MORE BUBBLES.

Another thing it can be is pH. If for some reason your pH in your water dropped to acidic levels.
Overtime your blocks will turn black.

I think it could be the distilled turning slightly acidic after reacting to something unknown in your tubing or rad.