Winter mpg vs summer

[Louis Amsler]

Oxygenated gas has alchohol in it and higher octane than gas alone. I don't know why, but it gets worse mileage. I remember the word was you needed to double the fuel delivery to run alchohol classes at the track. I guess it is just the more you mix in, the lower the mileage will be.

[Budman1962]

Well I guess the winter blends are gone. I took a 250 mile trip and got 15.3 (hand calculated). 15.6 on the overhead console. I think thats pretty good for a V10. The last trip I took on winter fuel it was 11.5.
Budman

[dew the thunder]

I don't think I'm gettin anymore than 10 or 11 with my new wheels and tires... still need to get my speedo re-calibrated so I can finally get accurate odometer readings.

[Budman1962]

Some winter blend info

R-Squared Energy Blog