neat read on gas myths...again, premium is a waste of money...

[bone crusher]

http://green.yahoo.com/blog/daily_gr...age-myths.html

[LittleJohn]

http://green.yahoo.com/blog/daily_gr...age-myths.html

again, premium is a waste of money...

...if your talking about fuel economy / mileage.

[fastfraser]

Only use what your engine calls for. Whenever I'm down in the good old US of A I fill-up with the good stuff, and I've not noticed any more MPGs.

[Firefly]

http://green.yahoo.com/blog/daily_gr...age-myths.html

Yup -- unless you've increased your compression or added the turbo --- premium won't benefit you at all. Not more MPG. Not more power.

The Spyder compression is only in the 9's (the BRP literature incorrectly says 11). This has been tested by both Aerocharger and Evoluzione.

I've personally ran both and there was zero difference.

[bone crusher]

Yup -- unless you've increased your compression or added the turbo --- premium won't benefit you at all. Not more MPG. Not more power.

The Spyder compression is only in the 9's (the BRP literature incorrectly says 11). This has been tested by both Aerocharger and Evoluzione.

I've personally ran both and there was zero difference.

Me too...this has been a myth for a long time, but people will still swear by it...I wonder if they subconsciously change their riding/driving patterns when they use premium and this is what comes into play?

[Odie]

I think pre-detonation comes into play with octane, not mpg. Being a v-twin engine you might get ping using lower octane, causing premature detonation, causing engine damage over time. This happened to my Harley when I used the cheap stuff. I could hear the engine ping, but the engine was out in the open, so if it pinged you heard it. If the Spyder is pinging with lower octane it would be hard to hear since the engine is enclosed. I wonder if there are any techs out there that might have some input into this.

[SpyderWolf]

I wonder if they subconsciously change their riding/driving patterns when they use premium and this is what comes into play?

You may have a point there. I know that I ryde my Spyder a heck of a lot harder than I ever push my cages. I have always run premium in my toys, so it is more of a habit than anything else for me. If I could put 5 gallons in it would only cost me $1.00 more than the lowest octane anyway.

[VaughnCat]

then why does my car run better and get better mileage with premium?

Cat

[Dragonrider]

There less rubbish in premium here in the NorthWet - you can even buy premium without any ethanol - can't do that with lo octane stuff..

[boborgera]

Very simple, I use high test [showing my age] It makes me feel better, and if i feel better my Spyder feels better, which in turn makes me twice better, or is that doulbe better?

[VaughnCat]

There less rubbish in premium here in the NorthWet - you can even buy premium without any ethanol - can't do that with lo octane stuff..

Yep. We have two stations locally, and there's such a difference in all of our vehicles, performance and mpg.

[Bootie]

Yup -- unless you've increased your compression or added the turbo --- premium won't benefit you at all. Not more MPG. Not more power.

The Spyder compression is only in the 9's (the BRP literature incorrectly says 11). This has been tested by both Aerocharger and Evoluzione.

I've personally ran both and there was zero difference.

My 2010 Spyder RT has a 12.2:1 Compression Ratio. This calls for 91 Octane or better, which is BRPs recommendation. You may get away with lower octane when the air is cool but during the Summer, with the temps in the 80s and 90s you will get "pinging", or worse. Detonation can ruin your engine.

[Gordy]

premium fuel will not give better fuel mileage.premium fuel burns slower so that there is no or less detonation.you will probably have more power on reg fuel because it burns faster

[boborgera]

premium fuel will not give better fuel mileage.premium fuel burns slower so that there is no or less detonation.you will probably have more power on reg fuel because it burns faster

It has nothing to do faster or slower burning fuel.
It's about compression ratios and how knock sensors retard the timing to compensate for lower octane fuel. That said some Spyders run better on 87 than 93, Some Spyders run better on 93 than 87, Just like Some Spyders brakes squeal, Some Spyders brakes don't squeal. If you have more power with 87 use it, If you have more power with 93 use that.
In all due respect, What ever floats your boat.

[draboo]

ours ran fine on 85. But I wouldnt do that again.

[Tom in NM]

. . . . . if you want the the basic (though a little complicated) truth about fuel grades and octane, here it is: http://www.spyderlovers.com/forums/s...1&postcount=30

I have worked in a gasoline refinery. I have provided support to both the lab and marketing divisions - but I am no gasoline "expert" - 3wheeldemon is.

It is clear people like to debate this, and as Bob said, "what ever floats your boat", but most people should probably stick with the recommended octane level ( or as close as you can get ) and feel like they have done the 'right thing' for their Spyder.

I guess now we can go back to talking oil.

Tom

[scudrunner]

The age-old debate on octane!

It has nothing to do faster or slower burning fuel.
It's about compression ratios and how knock sensors retard the timing to compensate for lower octane fuel.

Oh, but it DOES have to do with faster or slower burning fuel. Because of the compression. Yes, the knock sensors retard the timing, but only to a point. Try running 87 oct in a high performance engine and see how fast it caves.
Here's an interesting item.... the Smart Car requires 91 oct minimum! Not very smart, is it!

[boborgera]

. . . . . if you want the the basic (though a little complicated) truth about fuel grades and octane, here it is: http://www.spyderlovers.com/forums/s...1&postcount=30



I guess now we can go back to talking oil.

Tom

I'm using BRP 10 40 oil The problem i have is the Color of the bottle the oil comes in. If i go to a oil with a better looking bottle [color] will i void my warranty?

[bone crusher]

The age-old debate on octane!

Oh, but it DOES have to do with faster or slower burning fuel. Because of the compression. Yes, the knock sensors retard the timing, but only to a point. Try running 87 oct in a high performance engine and see how fast it caves.
Here's an interesting item.... the Smart Car requires 91 oct minimum! Not very smart, is it!

Scud,

Our Spyders are the size of a Smart Car and are a heck of a lot more fun to ride, regardless of what gas you run in it.

There's enough data out there to show that extra octane doesn't do much good. A lot of people with EXPENSIVE leased cars run 87 even though the manual says to run premium...believe it or not, their cars tend to run fine...for at least the time they have it leased!

[NancysToy]

I'm using BRP 10 40 oil The problem i have is the Color of the bottle the oil comes in. If i go to a oil with a better looking bottle [color] will i void my warranty?

Not if you can prove you are color blind.