Originally Posted by PhantomTaco
DO NOT USE EK COOLANT. I used it before myself and it clouded the hell out of all my tubes and gunked up my blocks, I think I still have photos somewhere.
Gunk is from tubing, if you want to be more precise, mainly plastisizer with some polymer strands.
Strands = polymer
Balls = plastisizer
Tubing that can't take glycols or others weak non polar solvents (or even strong polar solvents like H2O) will leak the plastisizer and some of the polymer strands in to the water, that will begin to collect in places with flow restriction.
Tube clouding is a sure sign that the walls of tube is deteriorating. So far, my Masterkeeler batch of UV blue tubing have shown no sign of this while the EK coolant have been looping for 4+ months.
LETS PUT THIS MYTH AT REST
Distilled water wont make your tubing immune from clouding or parts from corroding. Distilled water is actually quite nasty.
If anyone of you took any advanced chemistry, ever, you should know that distilled water is NOT inert. Auto ionization happens all the time, and because it is virtually devoid of any ions or anions, it will create an environment where surrounding materials will try to get in equilibrium. Best way to combat this is to saturate water (anti corrosion agents, strong conjugate base etc.) to the point where water and surroundings are in equilibrium and non reactive (not a solvent, no high enthalpy differences) so that the water is "tamed" and tubes and blocks protected.Edited by Cidd - 4/4/13 at 4:05am