Evans NPG+ Waterless Coolant is the most popular of Evans Waterless Coolants, recommended coolant for all gasoline and diesel engines. NPG+ is a year round, lifetime coolant. No other cooling system modifications are required for stock vehicles to run NPG+. Simply drain the entire system and fill. NPG+is safe for stored vehicles and vehicles operated in extreme cold conditions. Motorcycles and small engines are suggested to use Prep Fluid as a flush prior to installing NPG+. NPG+ meets or exceeds both the ASTM D 1384 corrosion test and the ASTM D 3306-94 specifications.

Boils 375F @0psi
Freezes -40F
Viscosity 2.3cp @ 212F
Surface Tension 44dyn/cm