escape2music@hotmail.com (Pete)
wrote:

>>Also, can you get a true reading of
>>MPG when you fill up at half a tank?

>No. How do you know you're at half a
>tank? By looking at your fuel gauge?
>There's no way you'll get an accurate
>measurement that way. Fill up with gas.
>Drive. Fill up with gas again. Then
>divide miles driven by gallons purchased
>(at second fillup of course).

That's what he's been doing--dividing miles and gallons used. I guess
the point I'm driving at is if you drive more miles on the tank, does it
give a higher MPG than if you fill up often? IOW, will a longer useage
period with more miles and gallons used create a better average?
Is it possible the full tank of gas creates more drag at the first half
of the fill up because of the added weight?