After reviewing your Log, it looks like your July 5th fill-up may be incorrect. The odometer noted was 166226 which is way off compared to the fill-ups around it. Please double check that it is correct and edit as necessary.
GREAT! That was it. Funny though. Does fuelly use the odometer readings or dates for sorting, or both? I'm guessing it uses the odometer readings to calculate the distances regardless of date, but then sorts according to date and time? I've found that I've had to add times in some times in order to get things to work correctly. Does this make sense?
Maybe it would be nice if you could add in an odometer column in the standard list view. It might help to catch errors too.
Fuelly calculates distances by Odometer readings regardless of date, but sorts by date on the Log Book.
If you input 2+ fill-ups on the same date at the same time (adding in past receipts) while they may be sorted in the wrong order (newest input first therefore oldest is entered last and on top) as long as the Odometer readings are right, all calculations will still be correct.
We're looking to implement more error-catching upon input of fill-ups to help cut down on instances like this.