fuel grade - Kawasaki Versys Forum
 
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post #1 of 12 (permalink) Old 02-16-2010, 01:05 PM Thread Starter
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fuel grade

Im curious as to what kind of fuel grade people are using? In the manual it says 87 octane; but i have also heard you should only use 91 or higher. Compression is 10.6/1 so 91 sounds like the better choice? Do you notice any loss of power with the lower grade? I run 87 in my shadow and get better gas mileage.
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post #2 of 12 (permalink) Old 02-16-2010, 01:08 PM
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Experts (not me) say that you are wasting your money using an octane rating higher than is necessary to prevent knock. I have tried 87, 89, 91, and 93 an can't tell any difference.
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post #3 of 12 (permalink) Old 02-16-2010, 01:34 PM
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+1 on regular gas. Regular gas contains slightly more btus/gallon, so if it doesn't knock, you'll get slightly better gas milage. I have never heard of a V knocking on regular gas.

Also the fuel injection will compensate and correct for any minor knocking issues (at least the car f.i. systems will). It will also compensate for a partially clogged air filter, keeping the air/fuel ratio constant.
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post #4 of 12 (permalink) Old 02-16-2010, 03:39 PM
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87 works fine.

81 Honda CB750F with Jupiter sidecar, 82 Honda CB750F, 86 Yamaha Radian, 87 BMW K100RS, 2002 Honda XR 200R, 2007 Suzuki Bandit 1250, 2009 Green Versys, 2010 Kawasaki Vukcan 900 Custom
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post #5 of 12 (permalink) Old 02-16-2010, 03:48 PM
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Originally Posted by tommylikesbeer View Post
87 works fine.
Agreed...

John in AZ
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post #6 of 12 (permalink) Old 02-16-2010, 05:20 PM
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Also agree on regular. I started off with prem. then switched after reading on the forum and I also noticed no difference in performance. Also easier on the wallet!
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post #7 of 12 (permalink) Old 02-16-2010, 08:50 PM
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It's 87 here in america the 91 is a different method for octain rating
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post #8 of 12 (permalink) Old 02-16-2010, 10:53 PM Thread Starter
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Also agree on regular. I started off with prem. then switched after reading on the forum and I also noticed no difference in performance. Also easier on the wallet!
Good luck and Welcome aboard!!
Thanks for all the info Dont want to spend more on the precious juice than I need too!
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post #9 of 12 (permalink) Old 02-20-2010, 01:24 PM
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I don't know if it's the California gas but mine knocks on hard acceleration with 87 octane. I'm going to start using 91................if it stops the knocking then the extra cost is worth it.
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post #10 of 12 (permalink) Old 02-20-2010, 02:23 PM
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I use Shell Optimax (Unleaded premium) and note that the running is much more smooth and crisp, also tends to have a better throttle response.
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post #11 of 12 (permalink) Old 02-21-2010, 08:30 AM
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Oh no not this again.
Regular, never had a knock anywhere in the USA I have ridden it.
If you are getting Knocking , you need to get it looked at as something is wrong.
Out west i was running 85 regular with no problems

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post #12 of 12 (permalink) Old 02-21-2010, 01:06 PM
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Sorry, slim to no chance there's something wrong and here's why......I'm sure the California models are set up to run even leaner than the other 49 states. ALL of my previous bikes have had this issue.
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