Took the E85 plunge today.... - Chevy Impala Forums
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post #1 of (permalink) Old 05-04-2018 Thread Starter
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Smile Took the E85 plunge today....

...flame suit on. I have been reading past threads on this forum and have been reading other forums and articles in general about the pros and cons to E85. Bottom line is this... Gas is expected to hit $3 a gallon in the Midwest by the beginning of Summer. I know in some parts of the country it is close to that, if not already there. Biggest concern is MPG and the potential loss. Have read both that people have lost noticeable mileage and some claim to be be close, as in minimal. My determination... Only 1 way to find out... Fuel with it a couple of times and see what happens. This is a 95% highway car and I drive the speed limit, 70, or less. We are in the 70's, close to 80's temp wise so we'll see if that makes a difference.

I ran the car to well below Empty and got 466 miles to this last tank... Just filled up 30 mins ago. So regardless of what I get for this tank, I will fill it again with E85 just to make sure all regular fuel is purged through. I will keep you all posted... Feel free to cheer me on or tell me how stupid I am... At least I will find out for myself. Just dont tell me to go buy a Prius!
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post #2 of (permalink) Old 05-04-2018
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^ I don't have that option. My '12/'13's are "gas-only", lol.
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I've read about too many E85-related issues (even in Flex-fuel Impalas!) to even consider it myself (plus, I've never even seen an E85 pump *ever*). :-) There were just a few threads about it on here not long ago (check engine light that seemed to be caused by repeated E85 use).

It'll be interested to here your feedback though!
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post #4 of (permalink) Old 05-05-2018
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E85 changes in actual gas/ethanol ratio thru the year 85% being the max Ethanol and I think 70% being the minimum so "your results will vary".

I bought E85 last weekend, not too hard to find here, kind of shocked nobody said anything when I pulled up to the pump in my car that can't use it. I buy it to mix with old cooking oil to burn brush and the hedge row between my yard and the farm field to the south.

Haven't tried it in the wife's 2014 Impala, wouldn't run it regularly but would consider occasional, maybe the different solvency will help keep the fuel system clean.

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I ran three tanks through a rental in Austin a few years ago. Don't think I'd do it on my own rigs.
I was not impressed with the fuel mileage. It was cheaper but not enough cheaper to make up for the mileage drop.

I'll be interested to hear about your experience... experiment.

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post #6 of (permalink) Old 05-06-2018
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Congratulations on taking the plunge. You never know how E85 works for you without trying several tank fulls yourself. I do use E85 from time to time in the spring/summer. There are some things I like about E85 and some things I don't. I do loose some mpg, goes from 23 to 16 mpg on average, yours will very. But i do get a smoother running engine, more power and the exhaust smells like corn! You can track the prices of E85 in you area on https://e85prices.com/ .

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post #7 of (permalink) Old 05-06-2018 Thread Starter
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I changed the oil today with Pennzoil Platinum and checked and set my air pressure in the tires. I hope to see a minimal drop in MPG being that it is all highway. We will see...

2014 Chevy Impala LTZ Limited
- My daily driver... 5% Window Tint, Rosen GM1210 Stereo, Polk Audio Components and 6x9s, Pioneer, Kenwood amps and sub, Addco Rear Sway Bar, ZZP Strut Tower Braces, LED fogs and low beams, back up and interior lighting, SS dash, stereo and shifter trim.
2004 Pontiac GTO
- Garage queen from day 1... bought brand new 12/31/04... Quick Silver Metallic/Black/6 speed... too much to list
2004 GMC Yukon SLT
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Not something personally I would do, but will be interested in seeing your results.

My 6 year constantly asks why. What adults can learn from 5 and 6 year olds, to listen with your ears and mind open. Hard to learn when you don't listen ......
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post #9 of (permalink) Old 05-07-2018
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Originally Posted by hatzie View Post
I ran three tanks through a rental in Austin a few years ago. Don't think I'd do it on my own rigs.
I was not impressed with the fuel mileage. It was cheaper but not enough cheaper to make up for the mileage drop.

I'll be interested to hear about your experience... experiment.
This reminds me of something I used to do when I was in worse financial shape that I am now. If I had a rental that was e85 compatible, I would drive it using regular gas, then fill it up with e85 right before I brought it back. I realized this might be unfair to the next driver who might not know about e85. I also realized that I might already being getting the car with e85 when I get it. Now I look at the gas mileage. If it is way low, I put e85 back in it. If I'm getting what looks like normal, I fill it with regular.
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post #10 of (permalink) Old 05-07-2018
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I personally run e85 in my car once or twice a year. I heard the higher ethanol works sort of like a fuel injector cleaner. Not sure if this is a myth or not. But figured it doesn't hurt much.
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I personally run e85 in my car once or twice a year. I heard the higher ethanol works sort of like a fuel injector cleaner. Not sure if this is a myth or not. But figured it doesn't hurt much.
Be careful of that. GM and many other manufacturers have cheaped out in many areas. Fuel filters apparently cost too much to design into the car now...
That being said. These cars don't have fuel filters so any crud that rattles loose will get into the injectors etc and gum up the works.

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No fuel filter????
That would shock me but it would be of no surprise if it became a non-maintenance service part only swapped in repairs.

Dwayne
96 Caprice with AI 200cc package
Best et 11.5
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Corn Squeezin's for fuel! 8 mpg is major in my world but higher octane is sure interesting too. They put up to 10% in our fuels here in the Land of Entrapment. Curious as to the change in octane this results in (if any)? I have to run either mid grade (88 octane) or premium (90 octane) as the New Mexico idea of regular is (86 octane). Needless to say my Impala pings like a ball peen hammer hittin' a greasy nail and the performance suffers as does the mileage (-3 MPG) on the "regular" stuff. So my question is how much corn squeezins by volume would it take to make a octane difference in petroleum cracked fuel?

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Originally Posted by Fred9505 View Post
Corn Squeezin's for fuel! 8 mpg is major in my world but higher octane is sure interesting too. They put up to 10% in our fuels here in the Land of Entrapment. Curious as to the change in octane this results in (if any)? I have to run either mid grade (88 octane) or premium (90 octane) as the New Mexico idea of regular is (86 octane). Needless to say my Impala pings like a ball peen hammer hittin' a greasy nail and the performance suffers as does the mileage (-3 MPG) on the "regular" stuff. So my question is how much corn squeezins by volume would it take to make a octane difference in petroleum cracked fuel?
If your vehicle is flex fuel you can check out the fuel calculator below and you can plug in the #gal of E85 and #gal of E10 and see the octane rating and ethanol percentage of the combined fuel. http://www.georgebelton.com/E85Calculator.php


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Update #1 ...

Top pic is just before leaving for work this morning... Ran a couple of errands yesterday afternoon. Bottom pic is after one round trip to work. Did 70 mph this morning and 65 on the way home. No pedal to the floor shenanigans. 65, 66 seems to be a good spot. Showed over 28 MPG on the DIC. Not gonna jump to conclusions either way yet, too early to get excited or cry.

At this point, it is not clear if engine runs smoother or feels faster. No check engine light or funny idle or any other hiccups... Knock on wood.
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2014 Chevy Impala LTZ Limited
- My daily driver... 5% Window Tint, Rosen GM1210 Stereo, Polk Audio Components and 6x9s, Pioneer, Kenwood amps and sub, Addco Rear Sway Bar, ZZP Strut Tower Braces, LED fogs and low beams, back up and interior lighting, SS dash, stereo and shifter trim.
2004 Pontiac GTO
- Garage queen from day 1... bought brand new 12/31/04... Quick Silver Metallic/Black/6 speed... too much to list
2004 GMC Yukon SLT
- Wife's DD... bone freakin stock
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