Fuel Octane - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 5 (permalink) Old 09-20-2008, 11:08 PM Thread Starter
Benjammin'
 
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Fuel Octane

I have read in here where octane level of fuel in our bikes doesn't matter...but, I have to say I filled up with high octane gas and swear I felt a difference when the gas was in my bike's system. The bike felt much more responsive AND, it was popping on decel really badly when I pulled in to fill up (it was really low on gas). After I filled up, it still popped, but was much, much quieter on decel.

Maybe I had some older, stale gas in the tank, or maybe it really can make a difference? Thoughts?

Ben-
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post #2 of 5 (permalink) Old 09-20-2008, 11:20 PM
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If it worked for you keep it up.
From what I understand the octane doesn't do our bikes any good because the additional higher octane fuel doesn't cook off as completely leaving a deposit that requires a detergent to clean this deposit off. The detergent raises the octane level requiring more detergent and the vicious cycle continues. This is just what I remember from other threads on the subject but the mind is weak and the remembry isn't what it used to be.

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post #3 of 5 (permalink) Old 09-21-2008, 09:41 AM
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Been using 87 since I got the bike without any problems. Took the seat off yesterday, and for some reason read the sticker in the tool kit area. Says to use 91. Since I haven't had any issues, I'll staywith the cheaper stuff.

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post #4 of 5 (permalink) Old 09-21-2008, 09:55 AM Thread Starter
Benjammin'
 
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I have also always used 87 octane in the bike. Not sure why I spent the extra $$ for 93, but on a whim I did. The bike really did run different- this tank at least.

Ben-
SW Ohio

'02 VN750
Pipes drilled
Spline lubed
R/R relocated
AGM batteried
Iridium equipped
LED tail lighted
8000-ish miled
Soon to be MCCTed

Lovin Life.
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post #5 of 5 (permalink) Old 09-21-2008, 02:34 PM
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Been discussed several times, see here:
https://www.vn750.com/forum/archive/i...hp/t-3374.html

The jist of all this is there is no reason to run high octane gas in your bike, as it actualy may cause more wear and tear on the parts do to carbon buildup.

The owners manual shows to use 91 "research octane", but that is not the same measurement as they use at the pumps here in the US.

Filling up with high octane to diminish decell popping is not the proper way to fix the issue.

KM

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