Evans Cooling Systems Belts and Cooling

Evans Cooling Systems: The Pioneer of Waterless Engine Coolant

Evans Cooling Systems is in a category of its own — literally. Engine coolant and antifreeze has been dominated by water-based formulas for over a century, but Evans set out to change that. Based in Suffield, Connecticut, the company was founded by John W. (Jack) Evans and J. Thomas (Tom) Light, who spent decades working with major automakers and motorsport teams on advanced cooling system technology. That research ultimately led to the creation of the world's first — and only — commercial waterless engine coolant.

Why Waterless? Understanding the Science

Traditional engine coolant is roughly 50% water, and while water is an effective heat-transfer medium, it comes with serious drawbacks. Water boils at a relatively low temperature, dangerously close to the operating range of a hot engine — which is why boil-overs happen. Water also promotes corrosion, electrolysis, and cavitation erosion throughout the cooling system over time.

Evans eliminates water from the equation entirely. Evans waterless coolants are glycol-based fluids with no water content, meaning the coolant stays in liquid form even under extreme operating conditions. With a boiling point of 375°F — compared to roughly 226°F for a conventional 50/50 mix — Evans coolant provides a dramatically wider safe operating temperature range. The absence of water also means no corrosion, no electrolysis, and lower system pressure, which reduces stress on hoses, pump seals, and radiator seams.

A Portfolio Built Around Protection

Evans offers several distinct formulations to match different engine types and use cases. The High Performance Waterless Coolant is designed for gasoline and light-duty diesel engines across a wide range of applications, including off-road vehicles, overlanders, hot rods, muscle cars, and CNG or LP engines. The NPG Waterless Coolant is a propylene glycol-based option favored by racing teams competing in series with "No Ethylene Glycol" rules. For classic car collectors and vintage vehicle owners, Collectors Choice Waterless Coolant offers a super-light formula engineered to preserve engines that may sit for extended periods.

To support a successful transition from water-based antifreeze, Evans also produces a dedicated Prep Fluid — a waterless flushing agent that purges residual water and conventional coolant from the system before the new coolant is installed. This critical step ensures the waterless system performs as intended from day one.

Patents, Innovation, and Longevity

Evans Cooling Systems holds multiple issued U.S. patents for its engine coolant technology, with additional patents pending domestically and internationally — including grants in China, India, and Japan. That intellectual property reflects decades of dedicated research and development. One of the most compelling claims Evans makes is that its coolant is a lifetime fluid: because the formula contains stable additives with no water to degrade them, there is no need for periodic coolant flushes or supplemental coolant additives (SCAs). For performance enthusiasts, fleet operators, and everyday drivers alike, that longevity translates into real long-term savings on maintenance.

Applications Across Motorsport and Beyond

Evans cooling products serve an impressive range of markets — from circle track and drag racing to motorcycles, historic vehicles, off-road powersports, and even light aircraft experimental applications. If an internal combustion engine generates heat, Evans has a waterless solution engineered to manage it.