Originally Posted by Bigkid
I have always used premium in both the SRTs. About six months ago I went on line and found a pure gas dealer in my town. The no ethanol pure gas wakes up the coupe. It is a difference I can feel and at about 10 cents a gal over premium. I used to get between 220 to 230 per tank with the ethanol premium, now I am going 260 to 280.Give it a try and let me know what you think.
Part of that is the lower energy value of ethanol, but not necessarily all of it. You would likely get anywhere from 10-30% reduction. If you were gettting 220 (low end) and now 280 (high end) your mpg on the new fuel is about 3.8 mpg higher with E0. That's just under 30% reduction, which is in line with the high end of the expected reduction based on the ethanol.
I have to say, my XFire get's significantly better gas mileage than that. I don't have an SRT6, and I don't drive it agressively (at least not all the tiime) and I've been getting between 22 and 26 mpg -- and I drive in the worst traffic in the country -- and I know I'm using E10. I guess I should be pretty happy with that.
Just be informed, E10 is in about 90% or more of all gasoline now and likely will be in all of it very soon. It may go higher as well -- up to E15.