Well just to fill u in on a discovery or two... knocked up a few loops of ThermoChill Rad (brass), Acrylic Res with black anodised endcaps (aluminium), DD TDX Block (copper). In each system was a single additive and distilled water. Additives were mixed to
the manufacturers instructions (as translated into useable ml figures over at
www.racingcoolant.com) for the purpose of this test. Systems were left to run for 5 days. Will produce a pic or two once everything else has been done.
Just on a visuals side of things...
Zerex Super Racing Coolant left the coolant looking the best, clear with a hint of pinky purple, v.little noticeable cloudiness or sediment. No staining. No noticeable corrosion. Zerex has always been my personal preference.
WaterWetter - stained the acrylic badly, instantly cloudy, white sediment visible. No noticeable corrosion.
PurpleIce - no staining, instantly cloudy and very murky looking water, white sediment visible but in lower quantities than with water wetter. No noticeable corrosion.
Just to physically prove that point (altho the bottle we received stated 5.3% on it's label)...
AC Blue - trashed everything!! Corrosion everywhere. Black Anodised endcaps in res ended up a nice deep browny red and powdery surface.
Obviously the above was ACBlue on it's own with distilled, no other additive. Asking for trouble I know, but wanted to see what happened.
Deep Blue UV Dye - clear, no visible corrosion YET, no staining (surprised me did that one - expected it to stain more than waterwetter did), no sediment YET. Always takes a week or two to appear tho with UV Dye... Occasional small bubble on surface of res endcap for no apparent reason implies corrosion taking place altho not yet visble to the eye particularly.
Each system is still sat, sealed, waiting for pH test... not bothered about CPU Temps etc as a result of the additives at the moment.