| EVANS lifetime, corrosion free, WATERLESS engine coolants have been proven on professional race circuits and private multi million dollar test tracks, exotic engine dynomometers, and in competition with virtually every major sanctioned body of racing including FORMULA 1, NASCAR, NHRA, SCCA, IMSA, IRL, Grand American, NMCA, ARCA, AMA, WERA, American Lemans, SCORE Off Road, World Rally up, and numerous Boat Racing Venues. |
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| Run Faster -
Run Better -
Never Overheat! |
Evans NPG+ waterless coolant is a blend of glycols. Evans NPG Coolant is 100% inhibited Propylene Glycol. Both can maintain a substantially vapor-free, liquid-to-metal contact at all coolant temperatures and engine loads. By bathing the entire combustion chamber with coolant 100% of the time, metal temperatures are controlled to such an extent that critical levels of detonation and pre-ignition are never reached. Because of the naturally high boiling point of NPG+ / NPG / NPG-R (375°F / 370°F / 400°F) , the need for adding high pressure to the cooling system is eliminated. With low pressure (4 to 7 psi) in the system, gasket seals, hose connections, and even the radiator operate safer and longer. |
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Race engines have the capacity to operate at much higher efficiencies, which leads to higher power production. The limiting factor has always been the conditions imposed by water-based cooling systems, including low boiling point and excessive vapor generation. These conditions cause localized coolant boiling, vapor blanketing at hot spots and the resultant destructive detonation and pre-ignition. |
When vapor blankets the surface, water-based coolants lose their ability to absorb heat from the hot spots in the combustion chamber, leading to high metal temperature spikes well above critical detonation levels. The result is loss of power from detonation or component structural failure from pre-ignition in the form of piston damage and/or warped or cracked heads. |
The boiling point of Evans NPG+ Coolant is 375° F in a non-pressurized system, NPG Coolant is 370° F, NPG-R is 400°F. On-track testing, in both Evans-owned and Evans-sponsored race cars, has shown that even if an Evans NPG cooling system is forced to operate at temperatures up to 300° F, detonation/pre-ignition control and previously forbidden combustion chamber pressures and temperatures are no longer a danger to engine efficiency and durability. |
Evans NPG Coolants are essentially "lifetime" coolants. In-vehicle, on-the-road 10 year tests, with gasoline and diesel engines, have exceeded 200,000 miles and 500,000 miles (still running) respectively without any chemical or performance deterioration. Elimination of scheduled coolant changes alone makes Evans NPG Coolants your economical choice. |
