m610

Thanks.

I didn't realize there what much difference between the cooling capacity of water and a water-anti-freeze mix.

I found this data on the subject: http://www.engineeringtoolbox.com/et...col-d_146.html

Quick comparison of a 50/50 anti-freeze solution versus water - the anti-freeze is/has:

1. Freezing point drops to -36F (-37C)
2. Dynamic viscosity is roughly twice as high as water, results in higher head pressures
3. Density is nearly the same. The total weight of the coolant will barely change.
4. Heat capacity is about 10-12% lower. You'd need a 10-12% larger cooling system to compensate.
5. Don't use chlorinated city water in your coolant. The chlorine is corrosive.

Anti-freeze being slick would be definitely be an issue at the track.

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