actually the boiling point of water at sea level under say 16 lbs. pressure would be more like 250 F, but it will freeze when it sits still at 32 F or below, so that's where coolant really helps. Of course, the higher up in elevation you are, the lower the boiling point of water will be, but even at 6000 ft, under same 16 lbs. the boiling point would be 238 F or so. Just an fwiw...
2004 Pontiac GTO - new DD, yay!
2007 Cadillac CTS-V - Sold
2006 Pontiac GTO - Sold
1992 Mitsubishi Galant VR4
1971 Chevy Malibu "383" <--need to get this back together!