| Hello,
Has anyone here used the coolant sold by Evans Cooling Systems as 
NPG+?  From the info on their web site, it's a water-free coolant 
consisting of mostly propylene glycol.  It's supposed to have a higher 
boiling point, lower freezing point, and lower specific heat (transfers 
heat faster) than the standard 50/50 mix of ethylene glycol and 
water.  It's a bit expensive at $25 per gallon, but it's supposed to be 
completely non-corrosive to common metals and have a service lifetime of 
500 thousand miles.
http://www.evanscooling.com
Thanks.
- John
 |