The great problem of the cooling system inside G5s was that Delphi put a corrosive liquid inside their cooling unit without mention the sediments this liquid created inside pipes. The o-rings used are not that good and I've read someone found screws not properly tighten too. Put a not conductive cooling liquid inside this units could have saved a lot of G5 lifes just in case of leaking with no sediments anywhere and no cpus damages.
If it is possible (and read again what Stephen_Robinson wrote) to put an air cooled system in a G5 without problem, why not?

[ Edited by Jambalah 31.12.2013 - 21:04 ]