10-03-2005, 10:41 AM
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Ridiculously Active Enthusiast
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Real Name: Larry S. Singleton
Location: Phoenix, AZ
Hybrids: 2007 TCH and Loving It !
Posts: 1,427
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Re: MPG - Calculated vs. computer?
I keep meticulous records also, and my HCH shows the FCD varies from my manual calcuations by about
1 MPG
over the first 16 months of ownership. That's pretty close. 
Certain tanks have varied by as much as 5.8 MPG one direction and 5.5 MPG the other direction. But in the end, it has averaged only 1 MPG difference.
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