Guest Anonymous Posted February 28, 2002 Share Posted February 28, 2002 Have any of you heard of this? What's the story? Apparently there's this stuff called non-aquaeous propylene glycol (NPG) that has an extremely low freezing point and a boiling point of 370F. You can run it at 0 psi -- the cooling system does not have to be pressurized. Supposedly it cools the engine much better because it creates no vapors in the system, thereby staying in contact with coolant passage walls at all times. If this is all true, and if there are no reliability issues, I am putting it in my Z. Input please! http://www.evanscooling.com/html/tech1.htm http://www.lubespecialist.com/coolant/coolingnowater.htm Quote Link to comment Share on other sites More sharing options...
Guest Luigi Posted March 7, 2002 Share Posted March 7, 2002 I used Evans coolant in a street car for 5 years. Good stuff. It was a straight drop in for me on a VKW golf with around 10.5:1 no knock with the timing advanced 6-8 deg. more than stock. I think to get the FULL benifits one should pay close attention to the pump speed. This stuff is thicker than reg. ethanol (sp?)glycol. If you have a high compression engine, this may be a way to hedge your bets. It is no substitute for correct state of tune. I liked it and will use it again. Side note, it doesn't eat alum. like reg. coolant. Quote Link to comment Share on other sites More sharing options...
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