Brian Gaff wrote

If you look at mars, There has been running water on the planet recently

Fraid not
http://www.abc.net.au/news/science/2...hirise/9157880

even though the temp is low and the air pressure low and one would expect
it either to evaporate or freeze, its only because its salty or mixed with
minerals that it is still fluid long enough to flow.

Water is quite interesting at the molecular level, expanding when cold and
when hot, it can also pack itself in ways that allow gasses to exist
between the molecules without being absorbed.

"Caecilius" wrote in message
...
On Fri, 22 Dec 2017 12:17:07 +0000, Vortex13
wrote:



Used undiluted it claims protection to -20C

50% dilution claims protection to -7.5C

How does that work then?

It's probably a mixture of alcohol and water. The alcohol is probably
methanol, as that's the cheapest alcohol available.

A google for "methanol water mixture freezing point" shows that the
freezing point vs concentration graph is non-linear.