I've been traking my fuel carefully using the fuel log. I now think my original reported 34.5 mpg was bogus. I don't think that first tank of gas in my fuel log was correct (not topped up accurately), so I've shifted 1.0 gallons of the next tank into the log entry for the first tank. The updated mpg's are:
Code:
1st: 31.57 mpg, 365.6 miles
2nd: 27.43 mpg, 95.14 miles
3rd: 29.27 mpg, 351.5 miles
4th: 29.20 mpg, 280.6 miles
5th: 31.13 mpg, 248.7 miles
6th: 31.24 mpg, 403.0 miles (Yes!)
I'm still quite pleased that I'm achieving 30+ mpg. But now when I fill up, I pause a bit after the first fuel shut-off 'click', and slowly fill until I get a second click. I think the pump clicked off prematurely on that first logged fillup.
Sorry if I mislead anyone.