it could be a little off.
after you refill the tank you can adjust the SC for the actual fuel used - this basically calibrates it.
i have heard some people say it is dead nuts on - and others say they can never get it to match the odometer / pumped gallons calculation.
At the very least it will give you a relative MPG of trying different things ( tire pressores - routs to work - DWL / EOC - what ever)
I plan on adjusting to get the best SG numbers and see what the Refill gives me for the actual MPG
steve
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Steve - AKA Doofus McFancypants
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"If there's a new way, I'll be the first in line - But it better work this time"
First Milestone passed - 30 MPG (city) 5/15/08
Best City Tank - 8/31/09- 34.3 MPG (EPA= 20)
Best Highway Tank - 5/20/09 - 36.5 MPG (EPA= 28)
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In effort to drive less:
Miles NOT driven in 2009 = 648 (Work from home and Alt Transporatation)
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