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Old 09-12-2003, 09:00 AM
y2kimmel y2kimmel is offline
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Join Date: May 2003
Location: DC Metro Area
Posts: 365
80/20 mix at high altitudes

I noticed that you said that you have an 80/20 mix of water/antifreeze. I seem to remember from chemistry that water boils at a lower temperature at higher altitudes (less pressure). So - maybe you're getting too much boiling from the weak mix that you've put in the car. The antifreeze raises the boiling point of the coolant mix - in addition to lowering the freezing point.

I know that more water makes for more efficient heat transfer - but perhaps your weak mixture is being counterproductive at high altitudes.

Just a thought.

Troy K.
1995 E420
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