So, for my last tank in the Geo, I put on over 400 miles. The gas gauge was inching towards 'E' just in time for a 26.6cent/gallon gas price increase. Yippee!
To top it all off, I decided to fill my tank with Petro Canada's "Super Clean 91" gasoline for $31.44. I'll see if it makes any difference in my fuel economy.
Then I wondered, has anyone tried using a 'premium' fuel to see if there is a FE difference? I would definitely need to see a 10% improvement in FE to offset the extra cost, but has anyone tried?