It's pretty clear you can't beat WATER for the best heat exchanger coolant as far as temperature goes. Water (straight or with water wetter) is better than ANY
antifreeze mix or Evans Coolant. So, I would expect to see slightly higher coolant temps with Evans than I do now with straight water. To me, that sounds like a good thing, to others, it could be frightening (but I don't scare easy).
This whole adventure could turn out to be either "not good" or a major bummer and I'll be back to water (with a lighter wallet). Research aint cheap, I'm going in...