While I have only my butt-dyno to go by,
I know how the car operates on standard gasoline, and E15.
I read that the stock ST can run up to E50, while the documentation does not recommend over E20.
So I went with 3 gallons of E85 and about 9 gallons of regular (up to E10).
Rounded off, that's E30.
I have to say, that acceleration is slower, and gas mileage is about 10-15% lower.
Considering the price I paid for E85 (this week at $2,39) I don't think I'll repeat this.
I did notice that 5 Gal of regular (<E10) and 5 gal of E15 works better than standard fuel!
I know how the car operates on standard gasoline, and E15.
I read that the stock ST can run up to E50, while the documentation does not recommend over E20.
So I went with 3 gallons of E85 and about 9 gallons of regular (up to E10).
Rounded off, that's E30.
I have to say, that acceleration is slower, and gas mileage is about 10-15% lower.
Considering the price I paid for E85 (this week at $2,39) I don't think I'll repeat this.
I did notice that 5 Gal of regular (<E10) and 5 gal of E15 works better than standard fuel!