[ecomodded]

Your mileage is improving -that's the right direction- Good job, the longer distance fill ups are more tell tale as they factor out a lot of the noise that you get with the small fill ups. If you can wait to run the tank through before taking mileage you will be more accurate, It takes longer but it gives you lots of miles to be frugal with and determine your tank average , or your cars true mpg.