- #655 of 767
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Re: Calculated vs Car figures [jana6]
by cdhc
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Nov 07, 2008 (12:12 pm)
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Replying to: jana6 (Nov 01, 2008 5:48 pm)
I was so elated today when I gassed up, I just wanted to share with you and everyone. I've put into hard use the 2 most recent tips I've learned about tire pressure, and not driving over 57mph. I knew this tank was good when I went over 350 miles, and the gas gauge barely hit the halfway mark. The computer showed 59.3mpg. After filling up (and yes I do top-off), it revealed 62.3mpg actual. Last week was 57.7mpg. I hope your mileage is improving. Yippppeeee ! ! ! ! ! 
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- #656 of 767
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Re: Calculated vs Car figures [cdhc]
by pf_flyer HOST
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Nov 07, 2008 (3:40 pm)
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Replying to: cdhc (Nov 07, 2008 12:12 pm)
Woo woo...
Keep up those good habits! 
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- #657 of 767
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Ethanol effect?
by pf_flyer HOST
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Nov 19, 2008 (6:02 pm)
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Any of you Prius owners seeing a mileage hit due to ethanol-blended fuels?
A lot of folks in the The Inconvenient Truth About Ethanol discussion are reporting 7-10% mileage reductions vs regular gas. I assume this would also affect hybrids but might tend to be a bit muted because of the hybrid system.
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- #658 of 767
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Re: Ethanol effect? [pf_flyer]
by prius2007
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Nov 19, 2008 (6:13 pm)
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Replying to: pf_flyer (Nov 19, 2008 6:02 pm)
Yes this has been discussed extensivelly over on priuschat. A lot of people complain about the hit with ethanol, although personally I'm not sure how you can seperate the impact of E10 and the impact of colder temps unless you're able to compare E10 vs no E10 during cold temps.
My data clearly shows a decline in MPG during winter. How much of it is due to E10 vs the cold I don't know.
Spring Summer Fall Winter
2007 50.4 59 57.5 55.3
2008 62.4 64.5 63.1
change 23.8% 9.3% 9.7%
Gabe
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- #659 of 767
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Re: Ethanol effect? [prius2007]
by pf_flyer HOST
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Nov 19, 2008 (6:17 pm)
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Replying to: prius2007 (Nov 19, 2008 6:13 pm)
Winter is definitely a factor as well, but my ethanol hits came during the summer and were clear and consistent.
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- #660 of 767
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Re: Ethanol effect? [pf_flyer]
by prius2007
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Nov 19, 2008 (6:24 pm)
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Replying to: pf_flyer (Nov 19, 2008 6:17 pm)
The "experts" say it has less energy. In some regions you can go to different gas stations with ethanol or no Ethanol so people have reported lower MPG with Ethanol.
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- #661 of 767
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Re: Ethanol effect? [pf_flyer]
by cdhc
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Nov 19, 2008 (6:46 pm)
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Replying to: pf_flyer (Nov 19, 2008 6:02 pm)
I had tried Ethanol in my Chevy prior to getting the Prius as it was a flex-fuel model. I can tell you that, at least at the time, Ethanol was 11% cheaper to buy, but I got 20% worse gas mileage. I haven't read anything about the Prius being able to run on Ethanol, but since it has a gas engine, and with my prior experience with Ethanol, I would be 100% certain that the mileage would suffer. What I would like to ask other people is, Does anyone have experience running premium in the Prius, and has that affected your mileage????
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- #662 of 767
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Re: Ethanol effect? [prius2007]
by pf_flyer HOST
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Nov 20, 2008 (4:22 am)
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Replying to: prius2007 (Nov 19, 2008 6:24 pm)
No need for experts, it's just a scientific fact that ethanol is not as "energy dense" as gasoline.
Just spoke with a friend who owns a pair of Prius and although he's not a fanatical mileage tracker like I am, he's saying that he's seeing at least a 5% drop off since ethanol crept into our area of the state.
He's not happy about that either.
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- #663 of 767
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Lost MPG
by oldcoach
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Nov 20, 2008 (10:35 am)
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I have a 08 prius and was getting 48.6 MPG now that it has gotten cold the MPG has drpopped to 42. I drive about 8 miles to work each day. The tem is in low 30's and high 20's. Is this common. 
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- #664 of 767
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Re: Lost MPG [oldcoach]
by pf_flyer HOST
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Nov 20, 2008 (10:48 am)
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Replying to: oldcoach (Nov 20, 2008 10:35 am)
Yep, a mileage dropoff as we move into colder weather is to be expected as we start using the "winter gas" formulation 
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