Yea I'll believe it when I see it.. That came from my playlist so I've seen that. That's why I said that it's a good list to look at for ideas.. Do your own research. The reality is water and water wetter mix have done the best to cool. I've spent a lot of time looking at this because I have a 525 rfs Beta that I take into tight ugly stuff so I looked at what to do for cooling. Before that I had a cr 250 that I maxed out on a bunch of mods to cool. Evans has a higher boiling point. That's the bottom line. It does not cool better . Evans is a way to go that is simpler if you want to go that way. But it doesn't make your bike run cooler .
This article sort of explains things easier.
..off of this site..
I can't find it now but there's a July 2006 article of Dirtrider called "cool it" and test comparison for cooling article that pretty much verifies this. They tested all the different options and what worked as the coolant that worked best to cool was water and royal purple water wetter in their tests. I haven't seen another comparison before or since that article and I've been looking as overheating is big in ugly wet technical riding like we have a lot of here.