[AJD] anti freeze

[JDNut at aol.com]

Interested parties??

I almost hate to prolong this thread, but both views may be materially 
correct.  Putting antifreeze on top of water is one experiment, but water on top of 
antifreeze would be a different experiment.  Given that the density of 
ethylene glycol is 1.1 g/mL, while the density of water is 1.0 g/mL, putting the 
denser ethylene glycol on top of water would probably mix faster by diffusion than 
water on top of antifreeze, especially if the channels are narrow in the 
radiator, etc.   Of course my true chemist colleagues would be glad to tell you 
that biochemists know just enough chemistry and enough biology to be dangerous.  
Some of my tractors spend their winter in the cold country, I premix 50-50 
before putting it into my thermosiphon tractors just to be sure.  

Take care, John Maxwell
Santa Maria CA