I just had some corrosion problems, my computer has been off for about two weeks while I sleeved all the cables, when finished I decided to change my loop (incorporate another rad I had in a drawer) and when dissassembling it I found corrosion in my drain line, specifically the cap at the end of it was very corroded. All my fittings are nickel plated, all reservoirs are made of copper, the only differente metal AFAIK is a Monsoon silver plug. I use distilled water and some drops of biocide only.
I flushed the radiators with vinegar. I also proceded to clean all fittings with vinegar and let them sit for about a day, some of the fittings were cleaner (I have several brands: Koolance, bitspower, Swiftech) and some rust particles settled in the container. I washed all of them with *normal* tap water, dried them with a towel and let them dry for another day.
Some screw caps for my Koolance compression fittings started forming rust (brown) *after* that, but I managed to clean them all except two that were too bad. Some other fittings formed some GREEN rust which was easily cleaned. Many fittings showed darkening of its plating, specially my Koolance Quick Disconnects. I then used metal polishing cream to try to bring them back to a shinier color which worked very good, so I then also used it to clean some of the "cloudiness" inside some fittings.
I'm not sure what caused the corrosion, never had it this bad, maybe some impurities in the distilled water? All the fittings seem to be made of copper or brass (since handling them with pliers sometimes peels the plating a bit and all seem copperish).
I don't want this c**p happening again... Could I mix in some anti-corrosion conditioner for car radiators? The one that looks like milk.
, thanks a lot