Is "Top Tier" gas worth it? - Page 7 - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #61 of 65 Old 04-06-2019, 02:00 PM
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My bike sat for 6 months over Winter with non ethanol 94octane gas in the tank, and no stebel, and then started on the first push, like it had been ridden every day.

Would it do that with low octane ethanol gas? maybe, but I'm not going to try it.

I find gas mileage goes up with higher quality gas, and I feel better performance as well, so i'm going to stick with it, and only put regular with ethanol in if there is no other convenient option.

Now the difference between regular with ethanol, and high tier gas with ethanol, I doubt that makes as much of a difference, but perhaps a minuscule amount, still, which side of the scale do you feel more comfortable with? The extra costs are not noticeable in the big picture.
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post #62 of 65 Old 04-07-2019, 09:14 AM
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Originally Posted by realshelby View Post
Some owners manuals will have an addendum about driving in higher altitude areas. Specifically allowing lower octane fuel. Because the air density is much lower, the engines cylinder pressure will be lower. That means you don't need the higher octane fuels to prevent detonation. Common practice in higher elevation areas to have 89 or 90 as the highest octane available. Which works fine, but know that if you fill up there and head toward sea level there is a chance you will notice a bit of pinging. I am always careful about that on the bikes and cars.
Ah, okay. That makes sense then..
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post #63 of 65 Old 04-07-2019, 02:31 PM
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Back when I had my old 1984 GPz750 8-valve kawasaki, it actually ran worse on the highest octane fuel. It wasn't a very high compression engine, so the extra octane didn't allow the fuel to combust as quickly as a lower octane fuel would at those lower compressions. Now, if you have a high compression engine, the extra octane will prevent the fuel from combusting too early (which causes pings/detonation)......

So, think carefully about what kind of engine you have, and whether the extra fuel cost is actually doing anything, or in my old kawasaki's case, making things worse (and costing the most!)

For my vstrom 650, it happily burns the 87 octane low end fuel.....doesn't run any better or worse if I happen to fill up with 91 octane.

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post #64 of 65 Old 04-09-2019, 08:50 AM
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Originally Posted by ERockJL View Post
bear with me here...

Does every top tier fuel station carry top tier rated fuel? If you go to the app, lets say a shell station close to me, it does not have the top tier logo, even though its a top tier rated company. If i go down the road near me a valero station has the logo in the app.

Is this just a formality, and every single mobil, shell, sunoco station carries top tier fuel.
Having TT gas available on every station is required for certification.
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post #65 of 65 Old 04-09-2019, 08:54 AM
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Originally Posted by cyclopathic View Post
Having TT gas available on every station is required for certification.
Well that solves that, thank you.

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