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Guest Message by DevFuse

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Register your Fusion Hybrid at the official Ford authorized registry here.


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What is going on with my Fusion's gas mileage?

gas mileage gauge

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21 replies to this topic

#21 OFFLINE   airbusguy

airbusguy

    Fusion Hybrid Member

  • Fusion Hybrid Member
  • 85 posts
  • Region:Canada British Columbia
  • Location:West Kelowna
  • Current Vehicle:2013 Fusion Titanium Hybrid

Posted 04 December 2018 - 09:21 AM

Check your math.

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#22 OFFLINE   ptjones

ptjones

    Fusion Hybrid Enthusiast

  • Fusion Hybrid Member
  • 786 posts
  • Region:U.S. Southern Atlantic
  • Location:Atlanta area
  • Current Vehicle:2013 CMAX SEL
  • My Hybrid's Year:2013

Posted 04 December 2018 - 10:23 AM

I found this with google search: https://durathermfluids.com/pdf/techpapers/pressure-boiling-point.pdf That said with 50/50 coolant/ water at 20 psi the boiling point would be 282*F.  I was looking for a formula, but the closest I got was 2-3*F for each increase of 1 psi. 50/50 mix boils at 223*F with no pressure so it looks like 3*F for each 1 psi increase so at 21 psi radiator cap pressure that brings it up to 285*F. That's way above the overheating alarm of 246*F. :)  I think I read 2*F for each 1 psi. before which is where I got 264*F for 21 psi radiator cap.

 

Paul


163299.png 600 Club

Current Record:  12/30/2014  902.2 mi.  63.8 mpg  14.13  gal. (Actual GPS:  922 mi.  68 mpg  13.5 gal.






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