As mentioned in the original post, distances were all GPS tracked rather than odometer. I do only put in 93 octane in here, but I can't imagine it makes 5 mpg difference, maybe 1-2 max--I'm not sure if the fuel I've been using has added ethanol or not, I would guess no since it doesn't make sense over here on the east coast (corn not as plentiful).

__________________
TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth