a high tech coolant that is called 'Non-Aqueous Propylene Glycol', this coolant is run straight with absolutely NO water in the system what-so-ever. The big advantages of this coolant is it's non-toxic (you could actually drink it - though highly NOT suggested), it's not near as slippery as Ethylene Glycol, it's a lubricant, doesn't allow corrosion, it doesn't freeze till all life on Earth has ceased, it doesn't begin to boil till 370*, it's a lifetime coolant - meaning it NEVER has to be replaced, and it transfers heat better than most anything else out there! The $25 per gallon price scares some people away from using it, but when you only need a gallon or two for a bike it's really not that big of an investment and the stuff is truely amazing.
nfloor 
