Just as food for thought:
There is a product called Evans Coolant. It is waterless, so no corrosion. In semi trucks, this coolant would be matched with a MUCH higher thermostat (because diesels run better at higher temps) and a ZERO PSI radiator cap. Because it is waterless, it doesn't generate pressure. I won't get into it any further unless someone wants to bring up "overheating", then I suppose we can get into what happens during that process.

Side note: the boiling point of standard coolant is 226, Evans' boiling point is 375.