What coolant to refill a watercooling system?

[DanG]

Ok, I have to refill my swiftech system because it's lost coolant somewhere, and to date I have not found a leak anywhere. I've been told that redline water wetter will work. Is this the stuff to get? What ratio would I mix it at?

[TheLostSwede]

Depending on how big the reservoir is but a small cap of it or a little dash is good enough.
But im getting scared when you say the fluid dissapears. A closed system shouldn´t drop any water at all.

[fuxor]

water wetter works just fine, as would a small amount of antifreeze.

[Omega65]

according to a Water Cooling article on overclockers.com, water vapor does manage to slowly evaporate from the system via the tubing.

Water-cooling Reservoir Theory and Construction Guide (http://www.overclockers.com/tips1089/)
pg2

A less well-known fact however, is that the internal water volume will decrease over time, even in systems with no obvious leaks. Water vapor can pass thru the walls of most plastic tubing. Silicone tubing is much more permeable to water vapor than vinyl.


Thoughts on Watercooling (http://www.overclockers.com/articles769/index02.asp)

[TheLostSwede]

That would take a long time though Omega. When i was running a closed system, i never had to refill and i ran it close to a year. That was on sucky pvc as well.