With an increase in temps, my MPG definitely seems to be increasing from the <30 MPG I was stuck under. I haven't gotten a fill up since the temps went way up, but the MPG needle spends much more time above the center now. Also i got my first oil change out of the way, so hopefully the new oil fill will help out a bit more than the factory fill did. Hopefully I will be crawling my way back into some better MPGs:
My trip computer is on 30.2 MPG, I have never reset it. ~5,500 miles on the car right now.
Since this thread is about gas, I would like to recommend never to park you car on an incline with the nose up and then pump gas. It will end up all over your feet.