Mileage Comparison

Since the 1st of the year I've been keeping a comparison worksheet on the overhead computer To compare to the hand calculations I have kept since I bought The truck new. I ALWAYS fill to the top of the neck & reset the the overhead before I pull away, so the numbers are comparable. An interesting situation has come to light. Even though the individual readings may vary as much as 2 mpg here are the averages.

Overhead 16.772
Hand 16.826

Interesting. I don't have the numbers for the overhead going back to the purchase date, but I will keep going to see how close they stay.