E15 - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #1 of 25 (permalink) Old 07-12-2020, 11:26 PM Thread Starter
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E15

On one of my wanderings I came across an E15 pump in Staunton VA. I was badly in need of a lunch break and grabbed the cheapest option without thinking, 88 Octane E15. 4 cents cheaper than 87 octane. After I was finished I got around to reading the label - Not for motorcycle use. I'm an AMA member and have been reading about the evils of E15 for years. And I gave my FJR a full tank of it.

I ended up running the tank down to reserve. No change in fuel economy or power. The 1300 just purred along at 79 mph uneventfully for the rest of the day.

Anyone else use E15 on a regular basis? I'm planning a corn belt trip and expect to see more of it. I'm not planning on being regular user, but it appears to be becoming more common on the interstates.

The link below has a pic of one of the pumps.

https://vitalbypoet.com/stories/case...-e15-offerings
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post #2 of 25 (permalink) Old 07-13-2020, 01:36 AM
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Originally Posted by FJR Owner View Post
On one of my wanderings I came across an E15 pump in Staunton VA. I was badly in need of a lunch break and grabbed the cheapest option without thinking, 88 Octane E15. 4 cents cheaper than 87 octane. After I was finished I got around to reading the label - Not for motorcycle use. I'm an AMA member and have been reading about the evils of E15 for years. And I gave my FJR a full tank of it.

I ended up running the tank down to reserve. No change in fuel economy or power. The 1300 just purred along at 79 mph uneventfully for the rest of the day.

Anyone else use E15 on a regular basis? I'm planning a corn belt trip and expect to see more of it. I'm not planning on being regular user, but it appears to be becoming more common on the interstates.

The link below has a pic of one of the pumps.

https://vitalbypoet.com/stories/case...-e15-offerings
Well my understanding it that is will eat the rubber lines in your gas lines ..once wont kill anything extended use could be hazardous
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post #3 of 25 (permalink) Old 07-13-2020, 07:20 AM
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FJR, first I would suggest you add your bike year/model to your signature line, it’ll help at times.

As far as the E15 goes the only thing that it should bother is reduced fuel economy as I believe most if not all new vehicles now use Viton rubber products in their fuel systems because it resists the damage the alcohol in the fuel caused years ago. The only negative you should see is reduced mpg’s due to the reduced btu’s of energy in a gallon of ethanol laced gas. That’s it.

Personally I wouldn’t use any ethanol laced fuels if I had plain old gas available and I wouldn’t store anything with it in the tank if at all possible but most of the negatives associated with it is nothing more than old internet myth these days.
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post #4 of 25 (permalink) Old 07-13-2020, 07:46 AM Thread Starter
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I've added my bike to the signature line. I traded my 09 FJR for a 2018 a couple years ago.
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post #5 of 25 (permalink) Old 07-13-2020, 07:56 AM
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Here's the facts of "plain old gas" around here:

- it comes in premium grade only 93 octane or better;

- E10 regular $1.81/gallon. Non ethanol $3.88/gal.

No thank you, E10 it is!
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post #6 of 25 (permalink) Old 07-13-2020, 08:19 AM
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Chalk it up to luck and don't do it again.
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Ridden wet. Put up hard.

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post #7 of 25 (permalink) Old 07-13-2020, 08:25 AM
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I wouldn't sweat if I had to use a tank of E15, but it is more corrosive than E10. E85 is a whole other game, hope it never comes.
No problem running E10 either, just treat the fuel if going to store it more than a couple of weeks to avoid water problems. I'll get ethanol-free (only available in Premium at Shell stations around here) for all my lawn equipment as that fuel is stored longer than 2 weeks, but occasionally I'll get E10 and treat it with Seafoam.
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post #8 of 25 (permalink) Old 07-13-2020, 05:56 PM
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I agree with the AMA in that if government is going to dictate fuel composition then they should not say “E10” today then suddenly tell manufactures they have to retroactively accept E15 under warranty.

Ethanol is not corrosive without water.

E15 carries about the same quantity of water as E10 plus “ethanol treatment”.

Any competent manufacturer has known ethanol would be rammed down our carburetors for 30 years. Gaskets, o-rings, and hoses have been compatible for a long time. Manufacturers go to great effort to precisely tune engines, E15 throws a kink in those works.

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post #9 of 25 (permalink) Old 07-13-2020, 09:03 PM
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Originally Posted by rbentnail View Post
Here's the facts of "plain old gas" around here:

- it comes in premium grade only 93 octane or better;

- E10 regular $1.81/gallon. Non ethanol $3.88/gal.

No thank you, E10 it is!
Around here I can get 87 octane ethanol-free, and it's about 50 cents a gallon higher. I do use it in my lawnmower, generator, etc. -- anything that's used infrequently and stored for long periods. I also use it in my ZRX, which has carburetors. Everything else, including the FJR, gets E10, and I've had no trouble.
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post #10 of 25 (permalink) Old 07-14-2020, 08:22 AM
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Our fleet of GSA vehicles were often badged as "Flex Fuel" compatible. In the paperwork we signed and carried each time we checked one out, it barred us from using E15 or E85. They never gave a reason.

Ridden wet. Put up hard.

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