[Mr.ac]

If it's not leaking then it's evaporating. Since it's a large percentage is water. And you know.... Heat and what nots, typical middle school sicence class.

The amount of coolant to fill the coolant reservoir is like 2 cups. Kind of makes you question why you bought that $30 coolant, where all you needed was a cheap $1 gallon of distilled water. But meh, at lest you'll have that coolant for years or when ever you need it.