Evans waterless coolant

10 replies to this topic
  • sjclark

Posted August 24, 2007 - 01:49 PM


Been hearing a lot about the Evans waterless coolant. It's boiling point is said to be 375 degrees, but removes heat better because it doesn't vaporize it motor. Does anyone have any experience with this coolant, good or bad?:worthy:

  • GCannon

Posted August 24, 2007 - 02:40 PM


try this::thumbsup:
http://www.thumperta...t=evans coolant

http://www.thumperta...t=evans coolant

Scroll down and read the posts by ncmountianman:worthy:

  • dustinw

Posted August 24, 2007 - 04:57 PM


Evans NPG-r is good stuff!

  • bobc1

Posted August 24, 2007 - 07:06 PM


It has solved the boiling coolant problem with my son's & my 2007 WR450F's. We ride in the hottest conditions in Southern California, desert & some slow forest trails.

The original coolant would boil under the worst conditions although when you stopped to allow it to cool, the coolant would return to the radiators from the coolant recovery tank. With the NPG+ there is no boiling.

We also had the fuel boiling in the tank. I applied reflective aluminum tape to the underside & front of the tanks. This solved this problem.


  • ophir

Posted August 25, 2007 - 11:59 AM


Where do you get this stuff and what is the freezing point?

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  • dustinw

Posted August 25, 2007 - 03:10 PM


NPG-r remains liquid to -10, but since it has no water it will not expand when it freezes, it will shrink.

You buy direct from Evans. Thier site really sucks, but it does work.


  • RCannon

Posted August 25, 2007 - 03:20 PM


I switched back to regular coolant after thinking about what it does. The good part, and bad part, is that it does not boil. I suppose it will if it gets hot enough, but its virtually boil proof in a motorcycle.

Its not as efficient at lower temps. This might not be a big deal. What bothered me is this. If the engine gets hot enough to boil regular coolant, you get some warning in the form of steam. With the Evans you really dont. Your still running temps that are too high, there is no warning while doing so.
Does this really solve anything?
I bought several gallons of the stuff at my local freight damage store and would not mind using it, I just cannot think of a reason to do so.

It also expands a little when it gets warm. A person has to underfill the radiator to keep it from puking out.

  • byggd

Posted August 26, 2007 - 08:07 AM


If you have trouble with your bike running hot run Evans and Too 2 Cool and you will never overheat again!

  • ophir

Posted August 26, 2007 - 10:42 AM


Does having a higher boiling point equal a cooler running tempurature or does it just push the boil over to a higher point?

  • byggd

Posted August 27, 2007 - 04:01 AM


This thread has some very good information on the product.

  • bobc1

Posted August 27, 2007 - 09:04 AM


Here is where I purchased the Evans NPG+ coolant. $27.95/gallon.



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