Thread: How do you like my new ..........

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Originally Posted by IC2

I wont use the more expensive gas at 30 to 40 cents more for 2 octane points(up to 89) or 50-70 cents more for the 93 for an experiment. My truck was built for the 87 gasoline which means the ECU is programmed for that stuff. I'll get a reflash of the ECU in a couple of months for any updates. On my Ford truck forums there have been threads on lower gas mileage with the 90/10 gas to ethanol blends but I haven't found an reputable on-line article about this yet. It does make sense that there will be a difference in combustion flame propagation in the engine. This propagation has to be modified by this amount of a volitile additive, 10%. I just am not sure which way. Unfortunately I just don't have enough information one way or the other to understand this.

In Austin 89 octane is 11 cents more. What you are missing is this. Sure the ECU of you fuel injected vehicle can operate with 87 octane but it will very likely provide more fuel due to the engine response. It's all physics, nothing more ...............

Kitz

kitz........I've kept fuel use and mileage for all of my vehicles since they were new. My gasoline powered vehicles all get about 1-1/2 to 3 MPG worse when using the ethanol blend. Strangely enough, they all get 2-3 MPG better when I'm in higher altitudes, i.e., Denver and the front range of Colorado.

Originally Posted by Jim Standley

Gas is 3.45 here and it has the ethanol blend. And the manufacturing plants are only 18 miles from where I live. Ethanol has nothing to do with lower gas prices.

Correct, but it has everything to do with higher food prices......

Sorry kitz....meant to direct my response to IC2

Originally Posted by IC2

I wont use the more expensive gas at 30 to 40 cents more for 2 octane points(up to 89) or 50-70 cents more for the 93 for an experiment. My truck was built for the 87 gasoline which means the ECU is programmed for that stuff. I'll get a reflash of the ECU in a couple of months for any updates. On my Ford truck forums there have been threads on lower gas mileage with the 90/10 gas to ethanol blends but I haven't found an reputable on-line article about this yet. It does make sense that there will be a difference in combustion flame propagation in the engine. This propagation has to be modified by this amount of a volitile additive, 10%. I just am not sure which way. Unfortunately I just don't have enough information one way or the other to understand this.

thats a bit ridiculous.... in san diego we pay base at 87 10 cents more for 89 and another 10 more for 91 we dont have 93 next step up is 107 (which is what i put in my motorcycle) for $7.50 a gallon