List of products by brand HAWK

Hawk waterless coolants, previously sold under the Evans Waterless Coolants brand, are designed to protect engines and cooling systems, from classic and historic vehicles to high-performance applications. Evans Waterless Coolants is now Hawk Waterless Coolants: the name has changed, but the manufacturer, products, formulations and quality remain the same.
Hawk Waterless Coolants technology is designed to operate without water in the cooling system. The relevant formulations feature a boiling point above 180°C, significantly reducing vapour formation around the hottest areas of the engine. By limiting vapour pockets, the coolant remains in contact with hot metal surfaces, helping to reduce localised hot spots that can contribute to overheating and thermal stress, particularly around the cylinder head gasket.
Removing water from the cooling system also helps prevent oxidation corrosion, while lower vapour pressure and reduced cavitation help protect hoses, seals, radiators, water pumps and other cooling system components.
The Hawk range includes dedicated formulations for sports cars, tuned and high-performance engines, competition vehicles, classic and historic cars, and motorcycles. Choosing the correct coolant depends not only on vehicle use, but also on engine design and the materials used throughout the cooling system.
GT2i is an official Hawk Waterless Coolants retailer, supplying waterless engine coolants as well as the products required to prepare and convert a cooling system.
 

Why switch to Hawk waterless engine coolant?

In an engine using conventional coolant, some areas of the cylinder head and engine block can reach very high local temperatures. The coolant can then begin to form vapour around these hot spots.
These vapour pockets reduce direct contact between the coolant and the metal surfaces. Heat transfer becomes less effective and localised hot spots can develop. These conditions can contribute to overheating and increase thermal stress, potentially contributing to head gasket failure.
With a boiling point above 180°C, the relevant Hawk waterless coolants provide a considerable margin before boiling and vapour formation occur.
Operating without water also provides several benefits for the cooling system:
 

• Reduced vapour formation around the hottest areas of the engine;
• Lower vapour pressure, with Hawk reporting up to 75% less than water-based coolants;
• Reduced cavitation erosion, with Hawk reporting a reduction of up to 75% compared with water-based coolants;
• Prevention of oxidation corrosion associated with water, according to Hawk;
• Reduced stress on hoses, seals and cooling system components;
• Water pump protection through reduced cavitation;
• Freeze protection, with a freezing point below -40°C for the relevant formulations;
• Very long service life, with Hawk reporting more than 20 years and one million miles in service without requiring replacement for certain formulations.

Which Hawk waterless coolant should I choose?

Not every engine has the same cooling requirements. Hawk offers several formulations according to the vehicle's age, engine construction, cooling system materials and intended use.
 

Vehicle age should primarily be considered a guide when choosing between Vintage Cool and Classic Cool. The actual engine design and materials used in the cooling system should take priority.
 

Hawk Power Cool 180°: sports cars and high-performance engines

Hawk Power Cool 180° is designed for sports cars, tuned vehicles, competition cars and high-performance engines.
It is particularly suitable for engines exposed to significant thermal loads through engine tuning, performance driving, rallying, circuit use or motorsport competition.
Its boiling point above 180°C helps significantly reduce vapour formation around the hottest areas of the engine.
 

Hawk Classic Cool 180°: classic and collector cars

Hawk Classic Cool 180° is intended for classic cars and collector vehicles, particularly engines predominantly manufactured from cast iron and also incorporating steel, copper and aluminium components.
Vehicles dating from approximately 1950 to 1980 provide a useful guide when selecting Classic Cool.
Waterless operation is particularly beneficial for older cooling systems by helping to reduce oxidation corrosion, cavitation and vapour pressure.
Classic Cool 180° is not suitable for engines using a thermosiphon cooling system.
 

Hawk Vintage Cool 180°: vintage and historic vehicles

Hawk Vintage Cool 180° is designed around the requirements of older automotive engines, particularly those using pre-nodular cast iron engine blocks with significant copper and brass components.
Vehicles dating up to approximately 1950 provide a useful guide for this formulation.
Vintage Cool is therefore particularly relevant for the restoration and preservation of vintage cars and historic vehicles.
As with Classic Cool, the cooling system design must be checked before use: Vintage Cool 180° is not compatible with thermosiphon cooling systems.
 

Hawk PowerSports R: waterless motorcycle coolant

Hawk PowerSports R is developed for road motorcycles, sports bikes, track bikes and competition motorcycles.
It is particularly suited to motorcycle engines predominantly manufactured from aluminium and incorporating steel and copper components.
PowerSports R should not be confused with Hawk PowerSports, another formulation intended for applications including motocross, trials, enduro and quad bikes.
 

Hawk Prep Fluid: preparing the engine before switching to waterless coolant

Converting to Hawk waterless coolant requires particular care when the cooling system currently contains, or has previously contained, a water-based engine coolant.
Simply draining the cooling system can leave water trapped inside the engine block, cylinder head, radiator, heater matrix and coolant passages.
Hawk Prep Fluid is a hygroscopic preparation fluid designed to absorb this residual water before the final fill with the appropriate Hawk waterless coolant.
The conversion procedure involves:
 

1. Draining as much of the existing coolant as possible.
2. Using Hawk Prep Fluid to absorb residual water remaining within the cooling system.
3. Completely draining the Prep Fluid.
4. Filling the system with the appropriate Hawk waterless coolant for the engine and application.

Prep Fluid is not intended to remain in the engine as the final coolant.
Following conversion, Hawk recommends achieving a residual water content ideally at or below 3%. This can be checked using a refractometer.
 

Evans Waterless Coolants is now Hawk Waterless Coolants

Evans Waterless Coolants is now known as Hawk Waterless Coolants.
For customers already familiar with Evans products, the main product name changes are straightforward:
Evans Power Cool 180° becomes Hawk Power Cool 180°
Evans Classic Cool 180° becomes Hawk Classic Cool 180°
Evans Vintage Cool 180° becomes Hawk Vintage Cool 180°
Evans PowerSports R becomes Hawk PowerSports R
Evans Prep Fluid becomes Hawk Prep Fluid
This is a brand identity change rather than a change in formulation. Customers searching for Evans engine coolant can therefore find the corresponding products under their new Hawk Waterless Coolants identity.
 

Hawk Waterless Coolants FAQ

What is Hawk Waterless Coolants?

Hawk Waterless Coolants specialises in waterless engine coolants. Its range includes dedicated formulations for sports and tuned cars, competition vehicles, classic and historic cars, and motorcycles.
 

Is Evans Waterless Coolants now Hawk Waterless Coolants?

Yes. Evans Waterless Coolants is now Hawk Waterless Coolants. The brand identity has changed, while the manufacturer, relevant products and their formulations remain the same.
 

Are Evans Power Cool and Hawk Power Cool the same product?

Yes. Evans Power Cool 180° is now sold as Hawk Power Cool 180°. The formulation remains unchanged.
 

What are the benefits of waterless engine coolant?

Removing water from the cooling system helps reduce vapour formation at high temperatures, lower vapour pressure, reduce cavitation and prevent oxidation corrosion associated with water.
These properties can benefit both highly stressed performance engines and the long-term preservation of older cooling systems.
 

What is the boiling point of Hawk waterless coolant?

The relevant Hawk formulations have a boiling point above 180°C. This helps reduce the formation of vapour pockets around the hottest parts of the engine.
 

Does waterless coolant prevent an engine from overheating?

Waterless coolant cannot correct the mechanical cause of an overheating problem. An inadequate radiator, faulty water pump, cooling fan problem, restricted coolant flow or another cooling system fault must still be diagnosed and repaired.
Its high boiling point does, however, help reduce localised boiling, vapour formation and the associated hot spots within the engine.
 

Which Hawk coolant should I use for a sports car?

Hawk Power Cool 180° is designed for sports cars, tuned vehicles, competition cars and high-performance engines.
 

Which Hawk coolant should I use for a classic car?

As a general guide, Hawk Classic Cool 180° is intended primarily for classic cars dating from approximately 1950 to 1980.
For older vehicles, particularly those dating up to approximately 1950 and using older engine and cooling system technologies, Hawk Vintage Cool 180° may be more appropriate.
Vehicle age is only a guide. Engine construction and cooling system materials should also be considered.
 

Which Hawk coolant should I use in a motorcycle?

Hawk PowerSports R is designed for road motorcycles, sports bikes, track bikes and competition motorcycles.
 

What is Hawk Prep Fluid used for?

Hawk Prep Fluid prepares the cooling system before conversion to waterless coolant. Its hygroscopic properties allow it to absorb residual water remaining in the engine after the existing coolant has been drained.
 

Do I need to prepare the cooling system before using Hawk coolant?

When converting from a coolant containing water, the cooling system must be properly prepared. Draining alone can leave water trapped in different parts of the engine. Prep Fluid helps remove this residual water before the final fill.
 

Can Hawk waterless coolant be mixed with water?

Hawk waterless coolant should never be intentionally diluted with water, as increasing the water content progressively reduces the benefits of waterless coolant technology.
 

Can water be added in an emergency?

In an emergency, if Hawk coolant is unavailable, water can be added temporarily to allow the vehicle to continue operating. The cooling system should subsequently be drained and prepared again with Prep Fluid before returning to waterless operation.
 

Do I need to add antifreeze to Hawk coolant?

No, not with the relevant formulations. With a freezing point below -40°C, conventional antifreeze should not be added.
 

Does Hawk waterless coolant protect against corrosion?

According to Hawk, removing water from the cooling system prevents oxidation corrosion associated with the presence of water. This can be particularly beneficial for preserving classic and historic engines and cooling systems.
 

How long does Hawk waterless coolant last?

For certain formulations, Hawk reports more than 20 years and one million miles of service without requiring replacement, provided the coolant is used correctly and is not contaminated with water.
 

Is GT2i an official Hawk Waterless Coolants retailer?

Yes. GT2i is an official Hawk Waterless Coolants retailer, supplying waterless engine coolants and the products required to prepare the cooling system for conversion.