Quote:
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Originally Posted by CGameProgrammer
Yes, that's all true, but if you remember the way this conversation started, it was because NASA got a 7 mpg drop going from 60 to 70 but a 9 mpg drop going from 70 to 80, which I argued was a result of the cold or other factors because it should have resulted in less than a 7 mpg drop. You are agreeing with me.
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Nasaengineer got 51.7 @ 60, 44.9 @ 70, 35.9 @ 80.
That's -
1.93 G / 100 mi @ 60
2.23 G / 100 mi @ 70
2.78 G / 100 mi @ 80
So it does look like the deterioration of FE from 70 to 80 was more, compared to 60-70, than we'd expect from aerodynamic drag.
Yes, I agree.
It could be a temprature change, or it could be a 10 miles per hour head wind that he'd hardly notice.