Which grade of fuel to use? - Page 2
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  1. #16

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    Changing my blinker fluid to a synthetic gave me way more power than switching octanes, and I think my pipes are cleaner too.

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  3. #17
    Super Moderator

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    Quote Originally Posted by Nels Ferre View Post
    If I understand it properly, higher octane fuel combusts easier than lower octane fuel, so his reasoning is flawed..

    I'm not sure which part of his reasoning you question (several possibilities ) but you have the octane thing backwards. A very low octane fuel "flashes" like an explosive. As octane goes up, it burns slower and more evenly.

    Quote Originally Posted by Nels Ferre View Post
    I can tell no difference in performance or mileage on my 2006 C50 between any grade of fuel.
    Your experience is typical if one is driving a vehicle (ANY vehicle) designed to use "regular" grade gas. Not everybody, mind you, but most folks would notice the same thing. Thus for most people, using a higher octane than required is just plain and simply a waste of money.

    And I think the temperature difference with high octane fuel is because of engine design and not the fuel. That is, a high compression engine that requires high octane fuel runs a tad bit hotter than a low compression engine of similar size.
    Last edited by Easy Rider; 12-01-2007 at 10:06 AM.
    Don't believe everything that you think.

  4. #18
    No Significant Other
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    Honest to God, I'm going to loose it. Easy Rider is right about octane burn.

    Just use what your owners manual says. If it says 87, use 87. Want a useless treat, add 89.

    On a bike, for added wonder, think how much gas from the previous customer, is left in the hose, pump and lines. By the time you fill your tank, the gas you paid for is just barely getting to the nozzle.
    " In the name of the Speedo, the Tach and the Holy Throttle, amen. "

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  6. #19
    Clunked into first gear
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    Like everyone else says, use what the manual says. It all has to do with engine design and higher octane is mainly required as compression goes up. Higher compression causes hotter temperatures inside the combustion chamber which causes low octane fuels to explode. This is caused pre-ignition or ping. Higher octane acts as a stabilizer or retardant if you will allowing the fuel/air mixture to compress and get hotter without igniting. I know it's a rudimentary explanation but the gist of it all is higher octane has no benefits in an engine not designed to use high octane fuel. Any perceived so called improvements are seat of the pants type deals and may have more to do with brand of gas than octane. That's my 2 cents.
    ...a chicken...I'd slap a chicken...

  7. #20
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    Quote Originally Posted by palanon View Post
    Honest to God, I'm going to loose it. Easy Rider is right about octane burn.
    What? You didn't think I could be right about anything ???
    Don't believe everything that you think.

  8. #21
    No Significant Other
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    Quote Originally Posted by Easy Rider View Post
    What? You didn't think I could be right about anything ???
    I didn't say that !!

    Actually, I find info you post to be very valuable. Unfortunately, my opinion and a 5 dollar bill won't even get you a decent Chimi..
    " In the name of the Speedo, the Tach and the Holy Throttle, amen. "

  9. #22
    Supporting Member

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    LOL!

    Good advice, guys. Good point about the hose volume, too.



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  10. #23

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    I had been running high octane fuel at first, but my dealer told me not to. He said my S83 would run better on 87 octane and he was right.

  11. #24

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    286

    Cool

    I burn 87 octane in my S50. Runs great, the manual calls for 87. I run 93 in my ninja, tried 87 and it ran like a slug, hard to start and the manual called for a minimum of 91 octane.

  12. #25
    Seat Tester
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    I use mid-grade (87) in my '06 S50.

  13. #26
    Supporting Member

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    You must be out west (fill out your profile!). 87 is the bottom here.



    'Busa shock, Racetech forks, Holeshot stage 1 & pipe, Hella headlights, CBRXX clipons, Givi E360 & V46, Zumo 550, Pilot Road 2CTs | Symtec grip heat
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  14. #27
    M-J Lifetime Achievement Award
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    A grade lower than 87???

    This forum needs a dead horse emoticon.

    And there is no such thing as a decent chimi.

    Quote Originally Posted by Jack Handy
    Sometimes I think I'd be better off dead. No, wait, not me, you.
    Loud pipes and other myths.


 
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