Evans Waterless Coolant technology offers a solution to engine overheating and metal degradation!

Whenever a new technology is introduced, questions arise about its validity, especially when words like “revolutionary” or “disruptive” are used. Skeptics may shrug off and move on, but for the true enthusiasts, skepticism turns to curiosity, and curiosity leads to investigation. This is especially true if that technology has the potential to provide a long-overdue solution to enduring problems, such as overheating or metal degradation.

Evans Waterless Coolant solves those problems, and the technology is fairly simple — to remove the issues caused by water, remove the water. But of course, there’s always more to the story. Here are some most commonly asked question about Evans Waterless Coolant.

Q: What are the advantages of Evans waterless coolants?

A: Evans contains no water and has a boiling point of 375 degrees Fahrenheit and freezes at minus 40 degrees Fahrenheit. This means no vapor formation, no vapor pressure, and no boilover. Evans maintains its liquid state, and with constant liquid-to-metal contact, efficient heat transfer continues even under higher temperatures. Evans’ lower operating pressure reduces stress on hoses, seals, and gaskets. The absence of water also means no corrosion and electrolysis.

Q: Which Evans Waterless Coolant product should I use for my vehicle?

A: High Performance Coolant is for cars and light-duty trucks. Heavy Duty Coolant is for heavy-duty diesel trucks and off-highway equipment, and Powersports Coolant is for motorcycles, ATVs, and snowmobiles.

Q: Do I need to change my radiator cap when using Evans Coolant?

A: No, a different radiator/pressure cap is not required. Evans Waterless Coolant expands slightly as it warms, creating pressure of 3-5psig, and the existing cap does not need to be changed.

Q: How do Evans waterless coolants control engine metal temperatures as compared to water- based coolants?

A: Water-based coolant boils at a temperature only slightly higher than the operating temperature of the coolant. Localized boiling releases water vapor that can only condense into coolant that is colder than the boiling point of water. Vapor that doesn’t condense occupies a volume that displaces liquid coolant. Hot engine metal, insulated by water vapor, becomes an engine “hot spot” that can cause pre-ignition and detonation. Evans’ high boiling point means it will not turn to vapor.

Q: Will Evans Coolant lower the operating temperature of my engine?

A: Vehicles running under normal operating conditions should show either no change or a slight increase in temperature, but that will depend on cooling system configuration, as well as driving conditions. Certain systems that use incompatible components, have an existing problem, or are poorly designed could run hotter. The ability to lower the operating temperature depends on multiple factors, primarily coolant flow volume and air flow temperature. For example, multipass radiators will result in higher temperatures due to decreased coolant flow volume vs. large-tube multirow radiators that improve coolant flow. Different thermostats may increase flow volume because of less restriction.

Q: What type of radiators does Evans recommend?

A: Evans recommends single-pass radiators as they have less flow resistance than multipass radiators. The following are minimum radiator core suggestions:

300 horsepower or less without AC
4 rows: .50-inch tube copper/brass

300 horsepower to 400 horsepower with AC
2 rows: 1-inch tube aluminum

400 horsepower to 600 horsepower
2 rows: 1.25-inch tube aluminum

600 horsepower and above
3 rows: 1-inch tube aluminum or 2 rows: 1.5-inch tube aluminum

Q: Does Evans require periodic maintenance? A: No periodic addition of additives is required, nor should any ever be added. Evans recommends inspecting the cooling system at least once a year to ensure water content remains below 5 percent.

Q: If I have a leak and Evans is not immediately available, what can I safely add?

A: The likelihood of coolant loss and the need for topping up are greatly reduced with Evans. In the event a leak occurs and Evans is not available, water or water-based coolant may be used. The cooling system will function, but the boilover and corrosion protection of Evans Waterless Coolant will be reduced. As a temporary measure, stop- leak products may be used. Current approved dry-type stop leaks are Bars Leak tablet part No. HDC, GM Cooling System Tabs, Aluma Seal, and Copper Seal. Liquid stop-leak products compatible with Evans are Bars Leak part No. 1186 and K-Seal part No. ST5501.

Q: Over time, will Evans absorb water from the atmosphere?

A: Evans Waterless Coolant is hygroscopic, which means it has the ability to absorb moisture. Evans should not absorb a significant amount of moisture as long as a conventional pressure cap is used.

Q: How does Evans prevent water pump cavitation?

Evans Waterless Coolant is a long-overdue solution to overheating, corrosion, and other vexing engine-cooling problems.

A: Evans Waterless Coolant inhibits vapor development in the pump over a broad range of temperatures. With Evans waterless coolant, the suction side of the coolant pump is never at a low enough pressure to flash vaporize the coolant. The pump never gets vapor-bound and can continue to pump coolant. No vapor bubbles are formed to collapse against the metal and cause cavitation erosion damage to the pump.

Q: How do I install Evans Waterless Coolant? A: The conversion process is not complicated but should be done thoroughly and according to written instructions, along with instructional videos on our website:

To summarize:

  1. Drain all old water-based coolant out from radiator, block, and heater core if accessible.
  2. Use high-volume air to force out remaining coolant.
  3. Fill with Evans Prep Fluid (waterless flush) and run for 15 minutes to circulate.
  4. Allow to cool, and drain out Prep Fluid in same manner as old water-based coolant.
  5. Fill with Evans Waterless Coolant and run for 15 minutes to circulate.
  6. Test for water content to confirm less than 5 percent water. Water content can be measured with a refractometer or a sample can be sent to Evans for testing.

Q: What happens if I have water in my cooling system after installing Evans?

A: A water content higher than 5 percent will lower the boiling point and may reduce the corrosion protection. If a water content exceeds 5 percent, drain a portion from the system and add back new Evans waterless coolant until below 5 percent.

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