Water wetter has been used for years by people in the racing community.
it dramaitically increases the heat tranfser ability of water/coolant.
we used it alot in my friends enduro car because you cant run coolant, only water. and we all know that 100% water doesnt work as good as coolant/water mix.
Kim, i noticed an increase in engine temp when i removed the hood liner.
but after i threw some water wetter inthere it dropped a butt-load!