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Re: SID and accuracy--real math
Posted by Larry in Phila (more from Larry in Phila) on Sat, 11 Jun 2005 11:53:20
In Reply to: SID and accuracy, Rich, Fri, 10 Jun 2005 14:05:31
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I have always compared by actual numbers at every fill-up, trying as best as I can to find the same fill point. I have found that my calculated mpg for regular driving runs always around 1.2 to a;mopst 2 mpg less than the SID. Oddly though, on long highway runs my SID has been 1/2 mpg less than the actual. Go figure.
The main thing is, it's consistent.
And it is interesting to watch on a very full tank what a hard slog up a long hill or sitting at a long light does to the measured mpg since fill-up. You can really see the difference between hard and soft accelerations in stop and go traffic.
posted by 4.238.1...
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