On 8/5/2017 12:19 PM, Bram van den Heuvel wrote:


That lowers the boiling point of pure water to 212 degrees, where a 50:50
mixture of coolant would be something higher than 212 degrees.


223 degrees


But how hot does an engine typically get?
Isn't an engine coolant generally around 200 degrees F?

Thermostat is usually 195 degrees but they will run hotter in summer
with AC on. That is why they are pressurized. With 50-50 mix and
pressure you can go to 250 before boiling.