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Old 07-26-07, 07:42 AM
  #14  
alanbikehouston
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Measuring average fuel consumption is rather difficult. I recently made a 500 mile trip in one day. I drove east 250 miles, driving a steady 70 mph. Filled up, and measured 22 mph. Turned around, and drove west 250 miles, driving a steady 70 mph. Filled up, and measured 24 mph.

Why the difference? Might have been the wind direction, wind velocity, air temperatures...any number of factors. But, it wasn't the air filter, because all the was added to the car was gas.

By the way, the EPA says the vehicle I was driving gets 28 mpg on the highway. I suspect I COULD get 28 mpg...if I was driving 50 mph instead of 70 mph.

And, it DID get great mileage here and there. The vehicle has a gauge that tells you EXACTLY what your gas mileage is at any given moment. Going down steep hills, I was getting 35 mpg, even going 70 mph.
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