Evans Waterless Coolant — How One Fluid Changes the Whole Car

The basics of coolant care are in our coolant guide. This article is the next chapter.

Summer heat and high loads make boiling resistance and water-pump cavitation relevant to coolant choice. Evans is a waterless option with a high boiling point and low system pressure.

It is Evans waterless coolant, which we have installed on more than 20 cars. Here is what makes it different and why the installation is demanding.

What makes Evans different

Ordinary coolant is antifreeze mixed with water — and the water is the problem. It moves heat best of anything, but it freezes, scales, and rusts.

So a little cooling power was traded away for antifreeze. That trade is the coolant we all use.

Evans is a glycol-based waterless coolant. Its manufacturer specifies a boiling point of about 190°C at atmospheric pressure.

The point of heat management is keeping a car healthy for the long run. What matters more than peak cooling power is not collapsing at the temperatures that damage parts.

These are strengths of Evans. Its high boiling point provides boiling resistance, while its formulation protects against water-related corrosion and pump cavitation. Proper conversion and a healthy cooling system help preserve those characteristics.

The roughly 190°C boiling point at atmospheric pressure provides useful boiling resistance. Conventional coolant boils at different temperatures depending on its mixture and system pressure; water at 100°C is not a direct comparison.

Evans describes reduced cavitation and system pressure as benefits. It still expands when heated: the manufacturer gives a pressure of about 3–5 psig. Let the engine and coolant cool fully before opening the cap, following the vehicle instructions.

The waterless formulation is designed to prevent corrosion and electrolysis. It does not repair worn parts or leaks, so we inspect the cooling lines and components during installation.

The short version — four things.

What actually changes

Installed cars report the same things: less engine noise, less vibration, smoother shifting.

One diesel owner put it this way: "Riding inside, you would not guess it is a diesel." Another owner back-to-back tested a friend's identical car and booked the install on the spot.

An Avante CN7 Hybrid customer sent us a dashboard record of 30.2 km/L. He said it was his seventh reading above 30 km/L.

He is on his third Evans car. Tried it on his first car, did his second, and brought his brand-new third car straight from the dealership.

Fuel economy varies with the route, weather and driving habits. This is the customer’s record for that drive, not a controlled before-and-after test of the installation’s effect. The case below shows the actual work and why he chose Evans for his third car.

Hybrids have an extra reason. The engine cycles on and off, so temperature swings constantly — stable cooling is what keeps the engine in its efficiency window.

Durability is a question time will answer. We keep collecting feedback from installed cars, building the data on how much slower leaks and hardening arrive.

Installation decides the result

Evans requires a conversion that manages old coolant and residual water. Final checks matter if the product’s high boiling point and protective characteristics are to be maintained.

Old coolant must be drained thoroughly and any remainder managed. Evans explains that mixing in water or conventional coolant can reduce its high boiling point and protection.

The manufacturer’s ready-for-use threshold is 3% water or less. Above 3%, the boiling point falls and corrosion and cavitation protection may decrease. Testing determines whether further work is needed.

And cooling lines are not simple. Heater lines, thermostats — sections that liquid cannot simply pass through all have to be dried.

We flush, dry and vacuum the system, then fill and circulate the coolant before checking residual water with a refractometer.

None of this was new to us. Long before Evans, our standard coolant service already meant flushing and drying, not drain-and-fill. Evans landed on top of that system — and the two clicked.

A standard install runs morning to evening in one day; cars with complex lines take two to three. High-displacement cars like a Panamera can need over three days of preparation alone.

Completion depends on the final condition as well as the work involved. Cooling layouts differ, so time alone cannot establish installation quality. We allow the time each vehicle needs and check residual water after circulation.

We worked out per-model procedures across dozens of high-output cars first. So far, not one customer has said they felt no difference.

While the system is open we look at the cooling parts too. Evans is a 100,000–200,000 km decision, so parts that will fail next — water pump, reservoir — are best replaced with genuine parts now.

Product and installation references: Evans High Performance · Evans FAQ (checked 2026-09-12)

Which cars suit it

It fits owners who have decided to keep a car for the long run. Cutting heat stress is the same thing as extending part life.

High-performance cars that run hot, and classics with scarce parts, are also strong candidates. We have installed Evans on 20+ cars, from compact sedans to a 1986 classic and Porsches.

For reference, Koenigsegg — the maker that pushes heat load furthest — is known to fill with waterless coolant from the factory.

There is no such thing as cheap and good, as the saying goes. Evans is like that: big benefits, real cost.

So the owners who choose it mostly fall into three groups: brand-new cars, high-value high-output cars, and keeper classics.

The benefits do not discriminate by car. The choice simply happens where the value is clearest.

Some owners do it on brand-new cars. It preserves a cooling system that has never seen corrosion — breaking the car in without heat stress from day one.

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