Quote:
Originally Posted by trooper Tdiesel
odd.
the local E85 pump says 105 octane 
and in winter its a 70% blend. |
That was using the average between the octane of the Ethanol and Gasoline. Which is not how to calculate octane. It needs to be run through a test engine.
Like this.
Although it certainly doesn't act like 96 octane, from what I've heard. There is a guy with a 12.5:1 turbo charged Honda K-series running E85 and he got pretty close to the same MPG after the build as he did on Gasoline.