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Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust.

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View Poll Results: What grade gasoline do you use?
Premium Gas 91+ octane 3,738 81.97%
Mid-Grade Gas 89-90 octane 313 6.86%
Regular 87 octane 387 8.49%
I mix it up, don't care, etc. 103 2.26%
Change based on the weather 19 0.42%
Voters: 4560. You may not vote on this poll

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  #1  
Old 26th February 2006
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Default Do you use premium gas in your Sportster?

Just wondering how many use premium 91 or better, mid-grade 89 or better or regular 87.
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  #2  
Old 26th February 2006
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The results are in !!! 100% use high-test !
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  #3  
Old 26th February 2006
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I don't think so. I have a buddy with an 06 XL1200R who uses regular or mid-grade exclusively.
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  #4  
Old 26th February 2006
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Yes.

I guess the 883s can use the lower grades without issue, but I'm willing to spend a few $$$ more for the good stuff. Why chance it?
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  #5  
Old 26th February 2006
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c'mon man.... you know its premium all the time for the sporty!!!!
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  #6  
Old 26th February 2006
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All the time.....91 or better
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  #7  
Old 26th February 2006
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I would think that if your bike runs well on Regular grade, poking the premium knozzel in its tank is really just throwing away money. I think I'm going to try at least the mid-grade to see what happens.
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  #8  
Old 26th February 2006
JohnT JohnT is offline
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H-D says the stock 883 will run on 87 and the stock 1200 needs 91. My 1200conversion, with its higher compression ratio, definitely needs 91 or better.
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  #9  
Old 26th February 2006
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Nothing but the best for my Sporty!
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  #10  
Old 26th February 2006
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octane rating is basically ping control built into fuel. additives in fuel control burn rate to some degree. higher octane is better for ignitions that can adjust timing to max. i use midgrade and notice my bike does run better/faster probably because fuel burns faster.
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