High Octane gas? - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 52 Old 10-20-2013, 10:23 PM Thread Starter
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High Octane gas?

So for the last many years in my Yamaha FZ^ I have been running supreme 91-92 octane gas.

When I got my Wee a couple months ago I just kept on doing the same thing. I get perverse pleasure out of filling my tank with the good stuff for $13-16 and watching the 90 lb soccer mom drop $80 into her giganto vehicle to haul her skinny ass and 2 bags of groceries.

But then it occurred to me that this is a different kind of engine than the Fizzer, and it's possible;e it might not even be good for this engine.

I have found lots of expertise on this forum and thought I might go fishing for some opinion/facts about whats the best type of gas, or if it even matters.

Your 2c is appreciated
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post #2 of 52 Old 10-20-2013, 10:25 PM
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87......89 max.

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post #3 of 52 Old 10-20-2013, 10:45 PM
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I use 87 normally, but with it being near the end of the season and the bike sitting more i have switched to 91 because around here 91 does not contain ethanol.

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post #4 of 52 Old 10-20-2013, 11:26 PM
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I have also been running 92 ethanol free...why would 87 be better?
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post #5 of 52 Old 10-20-2013, 11:41 PM
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The owner's manual says to use 87 octane. My Vee runs fine on regular. Same thing with the FJR1300, manual said 87 octane.

Ethanol is in most if not all gasoline here in the US, I've been told even the off road "non-ethanol" gasoline has up to 6%. So, you can't get totally ethanol free. I have done the jar test and found even the so called ethanol free gas will separate fairly quick. Just take a clear glass jar and fill it up, see if it separates into two or three parts after a DAY ..

The best thing is to ride often or drain the fuel tank dry if your storing it for months. I've been using Startron, seems to do something, carbs are cleaner inside, but fuel injected bikes will run on crappy fuel so Stroms won't be as picky with the 87 octane requirement. No pinging, no problem. If it runs fine, run the 87 or 85 octane.

Last edited by Sagebrush; 10-20-2013 at 11:45 PM.
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post #6 of 52 Old 10-21-2013, 12:00 AM
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I find no difference in either economy or performance between 87 or 93 octane. I always run the cheaper stuff but on occasion I'll run a tank of 93 just for shits and grins.

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post #7 of 52 Old 10-21-2013, 12:01 AM
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Originally Posted by doc_simple View Post
Your 2c is appreciated
do a octane mpg compar-o. which ever fuel gives you the best average mpg is the best fuel for your bike. that what i did. i found i get a average of 2.9 more mpg using 93 vs 87. see fuelly link http://www.fuelly.com/driver/jbw/dl1000
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post #8 of 52 Old 10-21-2013, 01:30 AM
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You'll go faster with hi-test due to your lighter wallet.

There are some variations between gasoline brands and seasonal formulations. Any 87 runs fine in our engines. A certain brand or octane level might work a bit better. Better than just mpg would be the gas that gives the lowest fuel cost per mile. E10 (10% ethanol) runs fine, but might not store as well for many months in a humid climate

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post #9 of 52 Old 10-21-2013, 03:17 AM
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Just use the 87. I ran 87 on mine until the military sent me overseas. Here on base all we have is 90 and I use that now with no issues. However, if I had the choice I would still be using 87. The engine is designed to run on 87.

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post #10 of 52 Old 10-21-2013, 05:52 AM
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The manual says to run AT LEAST 87 AKI (91 RON), but higher octane rating makes no real difference on it's own. Better additive packages might result in a cleaner fuel system, valves and combustion chamber, and less ethanol etc is better, but all you NEED is regular 87AKI.
You'll probably get better mileage on non-alcohol fuel and have more a little more "punch", but that's not the octane rating, it's just that alcohol has less energy in it than straight petro-fuel.

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