[s-cars] Coolant Heresy?

[Bill Mahoney]

The only coolant that works for our cars is the Audi OEM coolant.
That said, has anyone ever considered Evans NPG+ Racing Coolant?
http://www.evanscooling.com/main31.htm
Supposedly it was used in the Sprongel S2 rally car.  In comparing boiling
point vs oem, boiling point is about 100 degrees F higher; about 370 vs 270
for the oem coolant.
My take is that it may create better detonation.
Geniuses?
Bill m