Fuel octane - Page 2 - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
DL1000A - 2017+ DL1000A - 2017 (L7) and later

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post #11 of 55 Old 07-28-2019, 10:17 PM
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Quote:
Originally Posted by notacop View Post
Spec, ever been to Denio or Fields?

Doesn't ring a bell, Nevada somewhere?

I always top off before a long empty stretch, even carry extra gas now on my 1000.

Cause you know the throttle keeps opening up on those long straight bits, gas mileage takes a hit! I saw mid 20s a few times into a strong headwind at 85ish.

Faster must go...

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post #12 of 55 Old 07-28-2019, 10:38 PM
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Originally Posted by PerazziMx14 View Post

The best octane you can run it the lowest your bike doing not experience preignition/pinging/detonation on. For an overwhelming number of people the it 86/87 octane. The DL is not a high compression engine and lower octane fuel that the manual calls for is more then sufficient to run each time every time you fill up.

The Gen 2 1000 has a 11.3:1 compression ratio.

I'll stick with premium.
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post #13 of 55 Old 07-29-2019, 02:23 AM
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In my DL1000 I tried 91 for shit and giggles one day and I do believe I felt a positive difference. I typically run 89 if filling at a station. If filling at home from my boat gas I keep then its non ethanol 87. The non ethanol feel like the 89/91 ethanol.

Chris

1. 2004 DL1000
2. Next bike
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post #14 of 55 Old 07-29-2019, 05:12 AM
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Quote:
Originally Posted by PerazziMx14 View Post
The best octane you can run it the lowest your bike doing not experience preignition/pinging/detonation on. For an overwhelming number of people the it 86/87 octane. The DL is not a high compression engine and lower octane fuel that the manual calls for is more then sufficient to run each time every time you fill up.
my manual clearly calls for premium fuel with a minimum pump octane rating of 90.

could I get away with a lower octane if I babied it a bit and didnt put too much of a load on it..... maybe but why would I want to take that risk? in a pinch, yes. in the short term, I'd buy octane booster and carry that. for each time, every time.... no thanks.
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post #15 of 55 Old 07-29-2019, 10:50 AM
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"Doesn't ring a bell, Nevada somewhere?"

Northern Nevada, southern Oregon. Smack in the middle of No Where Scenic-ville.
Funny though, in Oklahoma I thought I was smack in the middle of kinda lost and didn't know where I was going and found a gas station/video store.
Someone must being living near bye.
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post #16 of 55 Old 07-30-2019, 12:18 AM
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Spec, I respectfully disagree. I was in Keller WA last week for a gas stop and they only had 87 octane. And Diesel. Nice little store with a deli and they had Octane Booster, which my son on his TL bought and used for fear of detonation at the high temps outside. I just added a bit of 87 to get to his next gas stop and filled with premium. I use that because of the ignition advancer and HC pistons in my old K6 Vee. I lost my high frequency hearing at a young age and it hasn't gotten better in the last 60 years or so. I can't hear detonation, pegs scraping (which I can feel), etc. Better safe than sorry.

Not to be argumentative, but also, I've read dyno tests that clearly show that premium gas does in fact produce a little more power due to the controlled burn versus the "pop" of regular. We're talking micro-milliseconds here. (Is there such a thing as a micro-millisecond?)
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post #17 of 55 Old 07-30-2019, 01:11 AM
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Running too high of an octane and you get incomplete combustion which means lower power output and the potential for carbon deposits.[/QUOTE]

The entire post is correct but the last point is important. And deserves repeating.

I noted in another thread that octane is basically a measure of resistance to spontaneous combustion under pressure. Has nothing to do with "improved power".

High compression engines require high octane fuel to avoid spontaneous combustion before the timed spark. What is commonly called pre-combustion or "pinging". Pinging is not good.

I owned a Guzzi that would ping like crazy with premium. Had to add Lucas Octane Booster to make it happy. Because it was an extremely high compression engine.

Same with airplane engines only more so. Thus AV GAS at 120+ octane.
Pilots term fuel for low compression engines as MO GAS (motor gas).
That would be us.

If you do not have a high compression engine you do not require high octane.
Stroms are not high compression.

If your engine isn't pinging it is happy. If it pings on regular gas I would look at timing issues.
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post #18 of 55 Old 07-31-2019, 02:50 PM
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Quote:
Originally Posted by Coach23101 View Post
...
If you do not have a high compression engine you do not require high octane.
Stroms are not high compression.

If your engine isn't pinging it is happy. If it pings on regular gas I would look at timing issues.


My DL1000 is 11.3:1
2 spark plug heads. Newer bikes run leaner than ever.
Incomplete combustion isn't an issue to worry about IMO.

Suzuki says to run high octane.

I'm going with premium unless I can't get it for some reason and then I'll take it easy on the throttle. Premium is about a $1.50 more per tank right now in my area.
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Last edited by Spec; 07-31-2019 at 03:15 PM.
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post #19 of 55 Old 10-20-2019, 11:01 PM
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I’m surprised people are recommending octane lower than the manual states.

The vee2/3 is a torquer. I would not run 87 octane without changing my driving habits, which would have to include not leveraging low end torque effectively.

Slow vs fast burn after auto ignition, and the topic of incomplete combustion, is something I hear repeated in forums all the time. It’s a myth.

The only difference between low and high octane is the gas’s ability to withstand pre-ignition. Meaning igniting outside the spark induced ignition. If you have an engine tuned for low end torque, and the manual says to run 90+... do exactly that.

In a pinch, sure. Just modify your throttle and shifting inputs to mitigate the risk.

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Last edited by Webfors; 10-21-2019 at 04:20 PM.
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post #20 of 55 Old 10-21-2019, 12:37 AM
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Quote:
Originally Posted by Webfors View Post
Im surprised people are recommending octane lower than the manual states.

The vee2/3 is a torquer. I would not run 87 octane without changing my driving habits, which would have to include not leveraging low end torque effectively.

Slow vs fast burn after auto ignition, and the topic of incomplete combustion, is something I hear repeated in forums all the time. Its a myth.

The only difference between low and high octane is the gass ability to withstand detonation. Meaning igniting outside the spark induced ignition. If you have an engine tuned for low end torque, and the manual says to run 90+... do exactly that.

In a pinch, sure. Just modify your throttle and shifting inputs to mitigate the risk.
Yes when using lower octane fuel than what your engine is designed for avoid large throttle openings at low revs where the effective compression ratio and risk of detonation are highest

In many cases higher octane fuels also have higher levels of cleaning agents which is a good thing.

..Tom
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My Opinion:
Vee or V= DL1000 before 2014
Vee2 or V2 = DL1000 2015 to 2019
Vee3 or V3 = DL1050 2020 to?

My Stroms:
2006 DL650: 202,000 km 125,500 miles, Sold
2012 DL650 139,500+ km, 86,700+ miles. Sold
2015 DL1000 New July 2015 205,000+ km, 127,000+ miles.

This can help preventing from cars pulling out in front of you (SMIDSY)
SMIDSY detailed report.


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