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Heavy duty coolant engineered to maximize diesel efficiency and engine life. Technologically superior to all water-based coolants.

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How many trucks have retrofited with it and what are the statistics?

I hear when people have problems with Evans coolant, not when they have success. Does the company keep any statistics, and will they please post here so we can make educated decision. If it is in testing phase then is there a way to become part of monitoring and evaluating performance. This is not cheap, and for the life time guarantee, some guys are talking of Evans coolant getting thicker, cracking heads and other not mentioned problems. Haven't seen any positive posts for Evans Coolant yet.

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Evans Cooling Systems® has been a leader in the formulation of an innovative coolant technology for improving the efficiencies of all engines including racing and performance applications. Evans exclusive NPG Coolant has proven itself in all types of engines, OE and aftermarket, and almost every major form of auto racing. At the same time, progressive truck fleet owners and owner / operators have been using Evans NPG Coolant to improve the durability and economy of their vehicles. The same revolutionary features that make Evans NPG Coolant the ideal performance coolant also pay off in diesel powered commercial vehicles.


Diesel engines run more efficiently when they're hot. But up until recently, inefficient cooling has limited how hot you can run a diesel before serious damage occurs. Conventional coolants containing water boil (vaporize) around 225oF near sea level. Cooling systems are pressurized to raise the average coolant boiling point to around 250oF, but that doesn't solve the real cooling problem, which occurs inside the water jackets of an engine.

Inside the water jacket, heat-stressed metal exceeds the thermal capacity of conventional coolant. Area (A) below shows the coolant boils, forming a vapor barrier at the metal's surface. This vapor barrier acts as an insulator and prevents efficient heat transfer from the metal to the coolant, causing localized overheating and vaporization of the coolant.

Furthermore, this super-heated, vaporized conventional coolant doesn't fully condense back into liquid until it circulates back to the radiator. Once it's returned to the radiator, it remains a gaseous barrier to the heat trying to exit to the air until it's fully recondensed. This means the conventional coolant is constantly losing efficiency as it circulates through the hot engine, and even through theradiator.


Evans NPG Coolant is pure coolant - no water added. The non-aqueous propylene glycol (NPG) boils at 370oF, greatly reducing vaporization and eliminating vapor problems. Shown, (above right), at Area (B) Evans NPG Coolant bathes the entire cooling jacket and significantly improves coolant surface effectiveness. Heat transfers more efficiently from the metal to the liquid coolant, and is carried off to the radiator for more effective elimination. Furthermore, any vaporized NPG coolant recondenses while still in the engine, so the coolant continues to absorb damaging heat on its way to the radiator.


When you eliminate trapped engine heat in the cooling system, you can modify an engine to run hotter, which increases your engine's efficiency. Optional minor cooling system modifications used in conjunction with NPG Coolant allow the operator to choose raising an engine's operating temperature and thus its power output and fuel efficiency. Usually an operating temperature increase of about 25oF produces significant fuel economy gains. Evans NPG Coolant carries off the increased heat smoothly and efficiently, eliminating destructive hot spots, cylinder liner and coolant pump cavitation, and uneven cooling problems throughout your entire cooling system.

This isn't theory - it's in actual use by truck fleets and owner / operators who report gains of up to 1.5 miles per gallon fuel savings in engines modified to take advantage of Evans NPG Coolant's increased cooling efficiency. The cost of the changes necessary to take advantage of Evans NPG Coolant improved cooling properties can be recouped in a year through improved fuel economy alone. The elimination of down-time due to cooling system problems, and elimination of the cost of coolant changes are icing on the cake. These advantages, spread out over several units or an entire fleet, result in significant savings.


Because Evans NPG Coolant doesn't "after-boil" (boil over, or vent) in the operational temperature range of a diesel engine cooling system, you can change to a low-pressure or no-pressure cooling system. While anyone servicing a cooling system must remain cautious around hot liquids, the danger of an explosive discharge of coolant from accidental cap removal or component rupture is minimized or eliminated. Low, or no-pressure systems also enjoy reduced hose and gasket leakage, and longer cooling system component life. NPG Coolant is safe for use with all metals and totally non-corrosive to many.

Conventional coolant must be flushed and changed at regular intervals to eliminate contaminants and renew the additives. But the limits of Evans NPG Coolant have yet to be reached, even with millions of miles of fleet use behind it. Evans' patented NPG Coolant is pure coolant - it contains no water and only a few lifetime additives. By the elimination of water, it virtually eliminates corrosion and the occurrence of pump and cylinder cavitation. This means major maintenance savings to all forms of HD diesel operators.


This whole process takes about 3 hours.

1) Drain the radiator by opening the pet****.

2) Remove the lower radiator hose from the radiator.

3) Drain the block by removing both block drains.


4) Remove upper heater hose from top of water pump and run water thru this hose.(this flushes out the heater core)

5) Blow water out of heater core with air compressor by blowing air thru this disconnected hose. The water will drain out the open block drains.

6) Run clean water thru open radiator tank to flush tank out. (you will most likely see teaspoons of sand in the bottom of this tank when you drain the coolant)

7) Let everything drain for about 15 minutes.

8) Plug all drains, reconnect heater hose, and fill system.

9) Drill small (1/16"-1/8") hole in cap to allow any water to evaporate out of system. This also incorporates the 0-pressure system and keeps the sytem from building pressure.

10) You're done. Now, just watch the level over the next couple weeks for a drop in level from water evaporating. You will loose about 2-4 quarts over the next couple weeks, then it will stop.


Evans NPG Coolant out-performs conventional coolant in freezing weather too. A 50/50 mix of conventional coolant and water typically freezes around -40?F. Evans NPG Coolant remains liquid until -70?F, when it contracts slightly and turns into a viscous slurry. It will not freeze solid and expand.

Evans NPG is non-hazardous to animals and much safer than conventional ethylene glycol coolant. It's essentially non-toxic, which eases disposal concerns.


Q. What happens if I am traveling and blow a hose with expensive Evans in there?

A. With a 0 pressure system, the likeliness of blowing anything in the cooling system are almost non-existent.

Q. What is the difference in using this and say some of the Extended like coolants or even Ford's new Premium Gold?

A. ELC's are made up using organic acid technology. Many diesels are not compatible with this type coolant. Ford's Premium Gold is a new type of "long life" coolant that uses an SCA inhibiter that has a longer protection life than most additive types. Keep in mind that as long as you have water in the system, as you do with any coolant other than Evans, Cavitaion occures. You are merely trying to prevent the damage caused by it. The sacrificial "layer" you place on the cylinder walls, whether it's organic or scale form, is just that. With Evans non-aqueous coolant, cavitation is non-existant. There is no guess whether your protected from the event, it just never happened. Without water, rust and scale are impossible to form in the system. The biggest advantage comes in the boiling point. With any coolant other than Evans, the low boiling point will ultimately create hot spots or localized boiling in the system. These "spots" can cause un-needed wear on cylinder walls and pistons. The equal heat transfer throughout the engine is what could ultimately save your pistons from melting or scarring rings from a hot run or long pull.


06 F-250 x/c 4X4 sb 17" alloy wheels. Tri-fold tonneau cover, weathertech vent visor,Ford floormats and splash guards. HarleyD headlights, Duplicolor bedliner coated bumpers, 08 rear bumper and taillights, herculiner rocker panels, XM radio, bosch wipers, Recon smoked cab lights, Edge Insight w/EGT probe, winter front.

06/10 ARP studs, turbo back silverline, new head gaskets, new oil cooler, upgraded turbo drain, fuel pressure reg upgrade, coolant filter, high idle mod, harpoon mod, pre-pump spin on fuel filter,ELC coolant, 6.4 banjo bolts, CCV reroute.

Truck weight empty fueled up, 4440 Front, 3040 rear, 7480 gross. Hex VXCF4,

SCT w/customs tunes from Vivian at Quick Tricks and Matt @ gearhead

Sent from my iPad

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