overheating water temp

["Toby Atwater" <tob@taltec.net>]

my new water temp guage is measured in degrees Celsious.... I know at sea
level, water boils at 100 but at what temp does my sprite overheat at? I
would imagine the cooling system is presurrized to avoid the coolant to boil
and lose its cooling properties.... also another cooling question... the
product called "water wetter" I know it helps water take heat better but
does it also augment the boiling point? and isnt it just Glycol with some
anti-corrosive additives?

thanks...

Toby