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Old 04-23-2011, 04:52 AM
  #8  
fla1976
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Here is the breakdown on Ethylene glycol antifreeze at sealevel.
Boiling Point B.P.
Freezing Point F.P.

Pure Water B.P. 100C / 212F F.P. 0C / 32F
Antifreeze/Water 50/50 mix B.P. 106C / 223F F.P. -37C / -35 F
Antifreeze/Water 70/30 mix B.P. 113C / 235F F.P. -55C / -67 F

Increasing altitude decreases the boiling point of water.
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