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Can I run 93 Octane?

  • Thread starter Thread starter IcyHotUrBeanBag
  • Start date Start date
I

IcyHotUrBeanBag

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I have a 80 gs 550E with stock carbs. I put in 93 octane after taking her out for the first time this year with the hopes the high octane would burn out crud in the jets after their winter hibernation in fuel stabilizer. She seemed to put out more power with the jet fuel and now I wonder if I can use the 93 all the time. My Clymers says use 87 but it was made in 87. Will high Octane hurt my Carbs?:confused:
 
No it won't hurt but you won't get any more power out of it either....
I use high octane if I know the bike is going to sit a week or two as octane degrades by about 1pt for every week it sits...
 
EDIT: Salty posted while I was typing...

Yes, you can run 93. It won't make more power though or clean your jets.
 
:lol: true.... Try seafoam for cleaning out your jets if its just from hibernation...

If you haven't done so by now then I suspect the carbs need a proper clean with O-rings replaced etc. :)
 
chuck hahn said:
It WILL clean out your wallet faster though!!!
Click to expand...

Well Said!!!:dancing: hahhaa

I simply cannot believe the amount of people who buy "premium" fuel at the pumps thinking it is better for their 87 octane low compression econoboxes.:eek:
 
Rather than using 93 octane i would be looking for ethanol-free gasoline.
In my neck of the woods it is only available in 91 octane.
 
steve murdoch said:
Rather than using 93 octane i would be looking for ethanol-free gasoline.
In my neck of the woods it is only available in 91 octane.
Click to expand...

Here Chevron premium is 94 octane and ethanol free. It also comes through a separate hose ensuring no contamination by the previous fuel used. I use it whenever I am able to. They are also one of the last companies to still offer free air.
 
CAN you? Sure. :cool:


Should you? Not really.
icon_shrug.gif


.
 
there is some argument, too, as to whether the higher octane doesn't burn well enough in our lower compression engines. i think most here will say 87 (non ethanol if you can find it) is not only good enough, but actually better, unless you have bumped compression with mods. (though, even the non-ethanol part is a "little" controversial.)

better than an oil thread, heh.

greg
 
greg78gs750 said:
better than an oil thread, heh.
Click to expand...
Well, not really, just another octain thread. Just read another "quality of the gas now" thread and probably by the end of the day the debate over which diesel oil to use in our bikes will start again. The more things change, the more the stay exactly the same;)
 
I like to use a lot of octane booster and a little mystery oil mixed with my fuel on occasion.
Do not know if it actually boosts the octane but the bike has more zip when I do.
 
High octane fuel actually burns SLOWER than low octane. This can be an advantage with a high compression engine in order to avoid knocking, or you could advance your ignition timing to take advantage of the fuels properties and pick up a bit of mpg and power. Modern cars have knock sensors that automatically adjust ignition timing until it's on the edge of knock, thus optimizing the system.

If someone's engine/timing is set up for using regular fuel, and then you use high octane fuel, you will NOT pick up any extra power or mpg. In fact, because the fuel is designed to burn slower, you may even reduce performance, although the difference will be minor and not noticeable.

Bottom line, use regular fuel in your GS and save the money.
 
Ed hit the nail on the head. Use regular fuel and send the money you save to me.
 
I have also heard it said (have not yet found the source, though) that there are fewer BTUs (energy content) in a gallon of "premium" fuel than there are in a gallon of "regular" fuel.

Going along with Nessism's theme of slower burning, add in that there is also less energy, there is just no way that you can add performance by simply using "premium" fuel.

It was designed to be slower-burning and harder to light so that it would resist pre-ignition caused by the heat of increased compression ratios.
Any increase in performance came from the increased compression ratio, not the fuel.

.
 
In addition, in colder weather , some 87 octane designed vehicles will exhibit a no start or hard start condition when fueled with 93 octane..
 
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