A Fair Question. The answer for those of you who may be unclear or have simply browsed into our site off the web; Quite simply, an "Evans Cooling System" is at the very least, a radically different fluid for use as coolant within internal combustion engines. To be concise; An Evans Cooling System is an internal combustion engine cooling system using a substantially water free coolant! This coolant is Non-Aqueous Propylene Glycol, or Evans NPG. Our NPG "waterless coolant" (less than 10% water, preferably below 2%) has a boiling point significantly higher than standard coolants, such as a 50/50 mix of Water and Ethylene Glycol, and operates at greatly reduced cooling system pressure (Usually between Zero and 7 pounds per square inch).

The preferred engine coolants are organic fluids with the most desirable being non-aqueous propylene glycol. The high boiling point (369°F) coolant combined with a relatively quick coolant flow rate combine to make the Evans system. It is a system with the unique ability to condense all vapor generated, from the heat of the engine, within the coolant jackets with no loss to the atmosphere, even at the low system pressure of Zero to 7 pounds per square inch.

Why do we refer to a coolant as a system? Aside from the operational dynamics unique to NPG, what makes up our "system" is often the addition of NPG specific "parts." In most applications, the addition of our specially designed, NPG coordinated components will provide greatly increased engine cooling system performance, far beyond currently utilized systems. To optimize an engine for our Evans NPG, we have assembled some of the best engine cooling components currently available. These include our Evans High Flow Pumps, Radiators, Thermostats, low/zero pressure radiator caps, and an assortment of ancillary system components, all of which were specifically designed for NPG.

We hope this brief outline of our "system" has satisfied any general curiosity regarding what an "Evans Cooling System" is. We invite you to browse through the remaining pages of our site for more detailed and in-depth information. Should you have questions after reading our site, give us a call, fax or email and we'll do our best to provide an answer.

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Copyright © 2004 Evans Cooling Systems, Inc. Page last revised 09/21/2000