Originally Posted by kimoswabi
I'm going to give it another day or so and then drain the IceDragon coolant and pull out all the tubings and see what the yellow thing is. Maybe I'll give Mayhem's Pastel White a try and do a back to back comparison.
So, I drained and took apart my tubes and inspected them and here's my findings.
1) Tubes (PrimoFlex Advanced LRT) are still in great condition, nice and clear with no visible plasticizing or staining from the IceDragon coolant.
2) The yellow material doesn't look to be liquid based but it seems to be sediment of some sort. The sediment material is on the inside of the tubes (2 different tubes pictured below)
3) Here's a comparison of a new IceDragon coolant (Left) vs. the drained coolant (Right). Notice how the used coolant is slightly darker in color?
4) I reinstalled the loop with new tubing and flushed it a number of times until the water looked clear. Then I drained it and put in blue coolant so that if there were any sediment still in my loop, it'd show up better than it would in clear distilled water. Lo and behold, you can see residue/ settlement collecting in the reservoir near the top.
5) Here's a close up of the residue/ sediment collected with a Q-tip.
Could they be the nano-particles separating out from the coolant? or dirty sediment from the radiator (Alphacool)? I did flush the radiator 5 times with near-boiling water prior to installation.
Mick mentioned it could be Lacquer coming off from the fittings (which sound quite scary) but I'm really stumped.
Last thing to note is that all of the components for this loop are brand new.