2012 F250 Super Duty Owners?
We're about to make a deal on a NEW 2012 F250 Super Duty. Regular cab & long bed. This one is stripped down... the only creature feature is A/C but for what it's worth has the "snowplow pkg". It'...
Forum Discussion
N-Trouble wrote:rdhetrick wrote:
Regarding the mileage and octane:
The higher octane by itself should not effect mileage, I suspect the lower mileage using 87 is actually due to the ethanol that is blended into the gas - up to 10%. In the 89 and above, there is no ethanol....
This statement makes no sense. Refineries don't make 89 octane.. 89 octane is created by mixing equal parts of 87 and 91 octane at the pump. And yes on some modern V8s you can get better mileage with higher octane. The higher octane allows the computer to advance the timing creating more power. More power equels less need for additional throttle input which yields better mileage. Has nothing to do with ethanol...
Correct answer about higher octane may give higher mileage.
ALL gasoline in PA, with the exception of a few holdouts, has ethanol added to every gallon regardless of octane rating.
