KTM Duke 390 Servicing: Evans Coolant

KTM Duke 390 Evans Coolant Change_1 KTM Duke 390 Evans Coolant Change_3 KTM Duke 390 Evans Coolant Change_4 KTM Duke 390 Evans Coolant Change_5 KTM Duke 390 Evans Coolant Change_6

Have you ever wondered how the engine coolant in your bike is changed? It is a three step process and takes around an hour to an hour and a half. At Speedzone, we highly recommend using the Evans Waterless Coolant for maximum engine performance.

Water is an excellent fluid for cooling, as long as it remains in a liquid state. However, when water turns to steam, it has virtually no capacity for heat transfer, which is likely to happen as engines operate very close to the boiling point of water. This results in boiling actually occurring and creating pressure within the cooling system. The boiling point of water is therefore the failure temperature of the cooling system. Further, water is aggressive towards cooling system metals and promotes electrolysis between dissimilar metals within the cooling system. It also contains oxygen which encourages corrosion in any cooling system.

As such, the Evans Waterless Coolant is a superior fluid for transferring heat in engines because it remains in a liquid state until above 375°F. Read more about the benefits of using the Evans Waterless Coolant here.

The first step is to remove or drain the existing coolant in the bike’s system. After this is done, the Evans Prep Fluid will be used to purge the cooling system; it seeks out old coolant, water and loose dirt that remain after draining the existing antifreeze or water mixture from an engine and is a preparatory engine flush compatible with the Classic Cool 180° and Vintage Cool 180°.

The mechanic will then let the engine run for a while and drain the Evans Prep Fluid thereafter. This is followed by the final step where the recommended water percentage is measured using a portable refractometer before new Evans Waterless Coolant is put into the engine.

Besides coolant change, Speedzone offers bike servicing packages specially tailored to the KTM Duke 390. The Evans Prep Fluid and Waterless Coolant change is $180, inclusive of labour for the KTM Duke 390, while prices start from $150 for most 2B bikes.

Check out our full range of motorbike accessories available online or drop by Speedzone to find out more about our KTM Duke 390 servicing packages!

1 Response Comment

  • KhaiMay 15, 2017 at 11:22 pm


    How much do you charge for Evans Prep Fluid and Waterless Coolant change for cb400 spec2


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