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Thread: Fuel

  1. #1

    Fuel

    Hi everyone,

    I just bought a GTL Exclusive, and I'm absolutely in love! That being said, I've heard to refuel it with 93 octane premium, and others have said to use Rec. 90 Ethanol free. It's almost time for me to fill up for the first time. What do you recommend.

    Eric
    (Overjoyed owner)

  2. #2
    FUKENGRUVEN SURVIVOR akbeemer's Avatar
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    Do what the owner's manual says.
    Kevin Huddy
    Tm Pterodactyl MT Outpost

  3. #3
    Quote Originally Posted by akbeemer View Post
    Do what the owner's manual says.
    Well the owners manual says 93 octane premium, but I've heard other K bike owners swear by ethanol free as being superior. So I was hoping for a bit more insight from experienced K bike owners.

  4. #4
    Registered User story's Avatar
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    Mine has a sticker next to the fuel cap that says 89 or better.
    I have put in 87 when nothing higher was available.
    Enjoying life in the beautiful state of Jefferson
    2013 K1600GTL : 2004 VTX1800c : 2007 K1200GT with Hannigen sidecar

  5. #5
    Recommend '93 octane ethanol free. Cuz de don't sell 98 octane in America. Of course my bike is an '05 RT so maybe a difference.

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    R. Reece Mullins Ebony R1200RT (Gretchen)
    MOA # 143779
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  6. #6
    Registered User okiegman's Avatar
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    Fuel GTL

    Eric,

    I have a GTLE that I purchased back in the summer and have about 7k on it. I use ethanol free high octane 93 when available but will use ethanol free 87 octane over higher octane fuels with ethanol. I have had no problems with lower octane fuels and have not noticed any differences in either performance or fuel economy.

    I live out in the country and finding 87 octane fuel without ethanol is easy but not so much for higher octane. If they have ethanol free high octane then that's what I use but....

    Fill up with the best gas you can while out riding and enjoying your new favorite motorcycle, I know I do!
    Wes Fitzer-MOA BoD - President
    BMWMOA 170126
    NE Oklahoma BMW Club; BMW Riders of Oklahoma
    2014 K1600 GTLE

  7. #7
    Quote Originally Posted by okiegman View Post
    Eric,

    I have a GTLE that I purchased back in the summer and have about 7k on it. I use ethanol free high octane 93 when available but will use ethanol free 87 octane over higher octane fuels with ethanol. I have had no problems with lower octane fuels and have not noticed any differences in either performance or fuel economy.

    I live out in the country and finding 87 octane fuel without ethanol is easy but not so much for higher octane. If they have ethanol free high octane then that's what I use but....

    Fill up with the best gas you can while out riding and enjoying your new favorite motorcycle, I know I do!
    Thank you.

  8. #8
    Wes,
    When I was OKC I SAW A LOT OF 91 octane ethanol free for sell. I think you live in Eufaula though sooo... I may be not be helping. Try the pure gas app. You may find local ethanol free gas in places you didn't know were there.
    R. Reece Mullins Ebony R1200RT (Gretchen)
    MOA # 143779
    MOA Charter Club #5 and #364
    SECMOA (BMW MOA secretary)

  9. #9
    Registered User okiegman's Avatar
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    Quote Originally Posted by rangerreece View Post
    Wes,
    When I was OKC I SAW A LOT OF 91 octane ethanol free for sell. I think you live in Eufaula though sooo... I may be not be helping. Try the pure gas app. You may find local ethanol free gas in places you didn't know were there.
    Merry Christmas RangerReece - I spend more time in Tulsa which is where I have problems finding pure gas - I have the app, it works but not 100% accurate.

    Eric - I've heard so many horror stories about ethanol if I'm stuck and must use ethanol gas then I make certain the next several tanks are ethanol free high octane (if possible).

    Get out there and enjoy that thing!
    Wes Fitzer-MOA BoD - President
    BMWMOA 170126
    NE Oklahoma BMW Club; BMW Riders of Oklahoma
    2014 K1600 GTLE

  10. #10
    Registered User d martin's Avatar
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    Roz - ron

    Europe uses ROZ to rate octane while gasoline is rated by RON in North America and the K16 only needs 89 RON.

  11. #11
    Quote Originally Posted by d martin View Post
    Europe uses ROZ to rate octane while gasoline is rated by RON in North America and the K16 only needs 89 RON.
    Close I think, but in the US the octane on the pump is ROZ + RON /2 or in simpler terms the average of ROZ and RON.

    Or more technically Research Octane plus Motor Octane divided by 2.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
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  12. #12
    Registered User wbrownell9's Avatar
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    89 (mid-range) is the right stuff. Premium/91+ octane sounds like it'd be better but it's a waste of money because the ECU will just advance the timing to compensate for the slower burn of the higer octane. The only time premium might helm is if you have a knocking problem, and if your new bike knocks then something is wrong.

    As to ethanol, I only have corn gas available and none of the theoretical issues have bit me. The longest I've had a bike sit with untreated corn gas in the tank is 3 months and it started & ran fine. I will admit that I'm not a 10/10 rider so I would never notice a 10% decrease in performance, would you?
    2016 R1200 GSA

  13. #13
    sMiling Voni's Avatar
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    No, but I do notice a consistent 10% decrease in gas mileage with ethanol.

    Voni
    sMiling because sometimes you just have to use gas with ethanol
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  14. #14
    Registered User lkchris's Avatar
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    Really a lot of misunderstanding regarding ethanol.

    Ethanol is an octane enhancer.

    When fuel does not have ethanol it needs some other additive to achieve the required octane. Tetraethyl lead is not it in the USA, as it's illegal.

    Lower octane is lower octane, regardless of whether there is ethanol in the fuel or not.

    Octane is the measure of resistance to pinging (and that's all it is), and regardless of the composition of the fuel you need what the manufacturer recommends.

    It's nice and all if the bike has a sensor to enable it to adjust to lower octane fuel. But when it does, performance is reduced and fuel economy suffers. Not worth the tradeoff.

    If you keep amount of fuel + air constant, the path to increased performance and at the same time reduced consumption is compression plus ignition advance. The risk is pinging and that's addressed by octane. Your knock sensor retards timing, decreasing performance and economy. The only way to change compression on the fly is with an electronically controlled turbocharger or supercharger, which you don't have.

    You will probably be better off with no ethanol fuel, but NOT if that means lower octane than needed. You may hate ethanol but it's cutting off your nose to spite your face if you avoid it by going to lower octane.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S, '84 R80G/S

  15. #15
    Quote Originally Posted by lkchris View Post
    Really a lot of misunderstanding regarding ethanol.

    Ethanol is an octane enhancer.

    When fuel does not have ethanol it needs some other additive to achieve the required octane. Tetraethyl lead is not it in the USA, as it's illegal.

    Lower octane is lower octane, regardless of whether there is ethanol in the fuel or not.

    Octane is the measure of resistance to pinging (and that's all it is), and regardless of the composition of the fuel you need what the manufacturer recommends.

    It's nice and all if the bike has a sensor to enable it to adjust to lower octane fuel. But when it does, performance is reduced and fuel economy suffers. Not worth the tradeoff.

    If you keep amount of fuel + air constant, the path to increased performance and at the same time reduced consumption is compression plus ignition advance. The risk is pinging and that's addressed by octane. Your knock sensor retards timing, decreasing performance and economy. The only way to change compression on the fly is with an electronically controlled turbocharger or supercharger, which you don't have.

    You will probably be better off with no ethanol fuel, but NOT if that means lower octane than needed. You may hate ethanol but it's cutting off your nose to spite your face if you avoid it by going to lower octane.
    That helps immensely. Thank you very much. Where I live, I have 2 choices. 90 octane ethanol free, or 93 octane premium that could contain up to 10% ethanol. I guess 93 premium it is.

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