[citation][nom]amuffin[/nom]What happens if you run out of coolant? Say, in 1-2 years, that is about when even Corsair's own Hydro series screws itself over. Think about it, consumers won't spend another 3000 for a laptop, so there has to be a way of adding coolant? Especially in a laptop, where it is very compact and crucial to someones entire system.[/citation]
It's a closed loop, you won't run out of coolant because it is not evaporating at an appreciable rate. Corsair's Hydro coolers are also closed loop, and don't run out of coolant either.
Think about it. If you fill a plastic bottle with water, would you expect to come back a year later and find an empty bottle? Of course not, you'd find it with pretty much the same level you left it at. I'd be surprised if you could measure the evaporation without some fairly sophisticated equipment.