W
I found a cheaper and easier option. just run 100% glycol. My motor temps are holding steady between 185-220*F and my fuel usage has dropped.
I agree that it does take out less heat from the engine, so that helps - but for something in such cold environments, keep in mind that the freezing point is at 10°F. Be careful! See attached plot.
![Freezing Point.jpg Freezing Point.jpg](https://www.snowest.com/forum/data/attachments/180/180276-9eb36c20882d0bb333ea113af6c0cbad.jpg)