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Fuels and Alternative Fuels Materials or substances that can be used as a fuel, waste oils, vegetable oils or animal fats, which can be used alone, or blended with fossil fuels.

Fuels and Alternative Fuels

E15 in Newer Cars


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  #21  
Old 04-08-2019, 09:07:36 AM
Odin Odin is offline
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Default Re: E15 in newer cars

I've said before my old 1988 Chevy Nova would get very nearly 40 MPG on 100% gasoline, but would be somewhere around 30-32 MPG on 10% ethanol. and I could feel a difference between the fuels on that, as the 10% ethanol the mixture would be off enough to be running hot and lacking power.

Have repeated the same experiment on my 2015 Mitsubishi Mirage, but both times so far I've actually gotten a ~2MPG increase on the E10 compared to the 100% gasoline. I believe this is because the modern EFI controls are able to take advantage of E10's knock resistance to tune the engine more aggressively and get an efficiency gain as well as compensating for the change in mixture that is required with the Ethanol fuel.

So its really only a problem for vehicles older than the mid 2000s, which weren't designed to deal with the E10 fuel and will need adjustments as well as having issues with the ethanol attacking the seals.
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Old 05-11-2019, 01:34:31 PM
Tracy T Tracy T is offline
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Default Re: E15 in newer cars

well after a month running 100% gasoline I have the results, yes running 100% gets better mpg, a whopping 1.4 more mpg improvment.
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  #23  
Old 05-11-2019, 08:45:17 PM
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OTTO-Sawyer OTTO-Sawyer is offline
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Default Re: E15 in newer cars

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well after a month running 100% gasoline I have the results, yes running 100% gets better mpg, a whopping 1.4 more mpg improvment.
Figure your Miles Per Dollar on each of them and see if it's worth it or not.

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  #24  
Old 05-11-2019, 10:12:56 PM
Tracy T Tracy T is offline
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Default Re: E15 in newer cars

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Figure your Miles Per Dollar on each of them and see if it's worth it or not.

to me its a, NO BRAINER! last tankfull i ran preminum with ethanol, we will see what that results. 10 cents cheaper than 100%. folks i do the math, YMMV but these are honest results based on what is avalible in my area. I sugguest you do your own math in your area with what is avalible.
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Old 05-11-2019, 10:21:42 PM
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Default Re: E15 in newer cars

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well after a month running 100% gasoline I have the results, yes running 100% gets better mpg, a whopping 1.4 more mpg improvment.
Are you sure you were running 100%?
There was a fella would take a sample of gas at every fill-up and add water to it to see how much ethanol was in it. He found ethanol in some supposedly pure gas too.
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Old 05-12-2019, 08:23:41 AM
Tracy T Tracy T is offline
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Default Re: E15 in newer cars

power i suppose anything is possible, I do recall one time i had to take two squirt trucks out and pump a gas station dry. someone got their numbers crossed up when they placed their order, tanker driver ended up having a few hundred gallons of diesel left over and guess where he dumped it, thats right, rignt into the gas storage! they had myself and another driver go out and pump it, we brought it back to the terminal and put it in one of our empty storage tanks then they pumped a whole tractor trailer load of gas in the same tank. that stuff went to several different stations a 1000 gallon at a time.
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Old 05-12-2019, 10:35:41 PM
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Default Re: E15 in newer cars

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Originally Posted by Tracy T View Post
to me its a, NO BRAINER! last tankfull i ran preminum with ethanol, we will see what that results. 10 cents cheaper than 100%. folks i do the math, YMMV but these are honest results based on what is avalible in my area. I sugguest you do your own math in your area with what is avalible.
Been There Done That.

Never had any measurable difference in mpg between them so I always ran the cheapest I could get for more mp$.

A few years ago I tried a different station than the 2 or 3 I normally used and noticed an increase in mpg (still marked as "Up To 10%" like all the others) and have been buying there ever since. An Added Bonus is they're usually $0.01 to $0.05 a gallon cheaper than everywhere else so I enjoy the higher mpg AND Lower mp$ at the same time.

In 40+ years of driving (and checking mileage on EVERY Tank) I've never noticed any difference in mileage or performance from one brand to another so I'm still at a bit of a loss to explain why I get better mileage Now all the sudden, but Circle-K consistently gives me better mileage than Mobil and Shell and Sinclair and Sunoco and Marathon and everything else I've used over the years.

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Old 10-20-2019, 11:35:09 PM
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Default Re: E15 in Newer Cars

My service team includes eight Ford F250's, 2wd, with 6.2l 2-valve 'flex fuel' rated 2019 engines. We have slide-in service bodies with ladder racks, with one extension ladder (collapsed 14ft long) and one stepladder (8ft) on the roof... and we average about 65,000 miles of mostly interstate driving each year for two years, before replacing the trucks with new model-year. Laden with typical tools, they're all about 9200lbs. They're all treated to oil/filter changes on 2500 mile intervals, and the oil samples are tested at each change.

We drove them for their first 10,000 miles on premium, and 10,000 on E10, then 10,000 on E85, then 10,000 on E10.

On premium (no ethanol), we averaged 12.8mpg.
on E10, we averaged 9.6.
On E85, we averaged 6.8.
Returning to non-ethanol, we averaged 14.0

We attribute the 1mpg nominal change to break-in.

Our oil samples indicated substantially higher water presence during E10 and E85 operation.

In theory, everything 'good' about ethanol SHOULD be true.

If it's properly mixed, transported, and dispensed, and used in a very short time, it'll be fine.

Fact is, that it's simply not.

Take a 2-gallon can to the gas station, and pump it full of E10. Get two glass pickle jars, fill 'em 2/3rds full. Install unadulterated lid on one, punch holes in the lid of the other, place them both on a shelf for six weeks, then take another look.

Gasoline is a hydrocarbon fuel, and with exception of the lighter fractions, will last a fairly long time on it's own, in even a marginal fuel storage vessel.

Ethanol is a carbohydrate, and it's incredibly hygroscopic, and very corrosive and hard on polymers.

Carbohydrates do not MIX with Hydrocarbons- they're in suspension. Those jars, after just a day or so, will start to show the ethanol settling out at the bottom, and all the moisture it's drawn from the atmosphere will be saturated within it.

THIS is where your fuel pickup is... so when you start that lawn mower, you'll get nicely saturated ethanol, along with fragments of all the rubber, plastic, aluminum, zinc,brass, etc., of the fuel system finding it's way into the main jet, emulsion tube, and idle jet.

It's crap. I've dealt with more destroyed chain saws, trimmers, generators, motorcycles, and boat engines due to ethanol, than all other common problems COMBINED.

My wife and I come from long-time families of corn growing, we're surrounded by it, and our farmland leases are paid by it, but we're not going to disseminate propoganda for benefit of pushing a product.
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Old 10-20-2019, 11:54:23 PM
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Default Re: E15 in Newer Cars

What a difference! 6.8 to 14.
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  #30  
Old Yesterday, 07:32:42 AM
pegasuspinto pegasuspinto is offline
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Default Re: E15 in Newer Cars

I drive a GMC service truck, flex fuel. It gets about 13 on regular and about 11 or so on e85. It definitely looses some, as expected, but certainly not half! Flex is about 20 cents cheaper, I don't think it adds up to a better deal in my area. Truck feels/runs the same.
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  #31  
Old Yesterday, 07:56:14 PM
dkamp dkamp is offline
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Default Re: E15 in Newer Cars

If you managed from 13, to 11, you're doing incredibly well... that's a 15% reduction in gallons/distance.

Common gasoline averages about 114,000btu per gallon.
Ethanol (if it's pure) yields only 76,100btu per gallon
That's 1/3rd LESS energy per gallon.

Given that E85 is SUPPOSED to contain 15% gasoline, we'd calculate that to yield about 17100btu of gasoline, and 64685btu of ethanol, for 81875btu/gallon for E85 mix.

Against 114kbtu/gal gasoline, that's an energy reduction of 30%.

IF ethanol wasn't aggressively hygroscopic, and didn't settle out at the gas station's bulk tank, or in the machine's fuel tank, and didn't chew away at seals and corrode fuel lines, a 15% penalty in fuel volume/distance economy might be justifiable... provided the pump price was more than 15% lower, but at our pumps, it's certainly NOT.
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Old Yesterday, 08:16:26 PM
uglyblue66 uglyblue66 is offline
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Default Re: E15 in Newer Cars

Well the trouble in my opionion with the "non ethel" gas is the preservitives are not in it and it gets old in the tank at the station before you buy it. So it might very well give some trouble as time goes by.
I know in 2003 I went thru Ohio in my 91 F150 and there was 4 pumps.1 was a 86 octane and it was cheaper!DUH, that truck never has been quite the same.I don't know what the heck was in that fuel but it was not good pulling a camper.
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