Check out evanscooling.com
Evans reports NPG+ coolant offers improvements in heat transfer and viscosity that make the new fluid a �pour-in,� not requiring changes to cooling system components. Conversion from the use of conventional coolants to take advantage of the benefits of non-aqueous engine cooling is now simple to accomplish.
NPG+ waterless coolant virtually eliminates overheating in gasoline or diesel engines - the waterless coolant allows engines to tolerate running hotter, without boiling over, and allows the cooling system to run at very low pressure.
Evans said NPG+ retains all of the benefits of Evans original NPG coolant, while improving upon its thermal conductivity by about 32 percent and reducing its viscosity by about 65 percent.
Original Post