Katana of the Month - May 2008  XMAN75

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Go Back   KatRiders.com > Suzuki Katana Forums > Suzuki GSXF 650 Talk

Suzuki GSXF 650 Talk A little corner of katriders for the new GSXF 650s.

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Old 08-07-2008, 02:11 PM   #41
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Definitely 87, sure.. some manuals for bikes and even cars say to use a higher grade fuel but I can't tell you how many articles on CNN or ConsumerReports.org say that it is a complete waste of money. Maybe I'd go higher up the scale if gas was still $.99 cents, til then, money in your pocket speaking, it defeats the purpose of riding your bike vs. a car!
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Old 08-10-2008, 01:27 PM   #42
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This is the 650 forum, isn't it.... Why so many comments about what the Kat needs.... maybe the original question was for what gas the gsx650f was happiest with??... My manual for the 675 says 87, and it runs fine...

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Old 08-26-2008, 02:38 PM   #43
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I,ve always ran 93. There's no doubt in my mind that 87 won't do though... But 93 isn't much more here so...
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Old 08-26-2008, 02:53 PM   #44
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I run 93 also since it seems to be abit more smooth; but I think it's all in the mind, lol!

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Old 08-26-2008, 03:24 PM   #45
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I run the Hi test whatever that is.
93 I guess.Most expensive but whatever with the millage it's not a concern.
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Old 10-09-2008, 01:09 PM   #46
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I havent been able to tell the differnce.
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Old 10-09-2008, 01:11 PM   #47
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Old 10-09-2008, 01:59 PM   #48
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I find I get the best mpg from 87. The higher octanes MIGHT give a tad better response, but generally poorer mileage. No use in the extra octane points if the engine hasn't been modified to take advantage of it.
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Old 10-09-2008, 06:27 PM   #49
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The guy i bought mine from said he only used 93 in her, i guess that's what i will use since that's what she is used to
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Old 10-09-2008, 06:51 PM   #50
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i have used both with no noticeable difference,,,,so i use 87 now
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