what was the point in bringing this post back from the dead just to say +1

 

Because the question still arises.

It happened to arise with a friend of mine.

I happened to use the forum search tool and answer his questions.

People would still like to know good reasoning on the type of gas to use.

Does it bother you that it's "brought back from the dead"?

I'm sorry, next time i'll leave out the +1 and put a simple "this" in it's place.

Hope I satisfied your questioning and didn't appear harsh or anything of that matter, was just a bit baffled you would ask a question like that. Why shouldn't a thread from months even years to date with good sense be brought back to page 1? Seems fine to me.

 

good read thank you Twenty

 

I use midgrade. It works, and I've never had a problem. After this tank I may run regular, just to see if I get any difference, as far as mileage and throttle response go.

 

Burn whatever you like - 87-93. The manual calls for 87 so you can certainly use that. I use 93 because I want to - if you put 4k miles a year on the bike it is about 20 bucks extra.... Not an amount worth worrying over.

Sometimes I will run diesel for something different....

 

Let's make this clear...

Manufacturer states minimum 86 Octane to resist detonation and preignition. What is considered recommended is 87 octane. Personally I use 89 and it works out nicely. I do this simply due to differences in impurities and additives between brands of fuel.

Using anything beyond 89 octane will not benefit you, in fact, you may be reducing the power output of your motorcycle.

 

I run race gas in my lawnmower because it makes the grass fly out faster.

My bike gets the recommended 87.

I once told a woman at a gas station that 87 was recommended for her big new gas guzzling dodge pickup, and that it would save her some money vs. the premium she was pumping.
She told me to "f#%@ off".
Can't argue with that!

 

I have seen this claim made before. So...I'll ask for an engineering/technical reference on it. My copy of Taylor's treatise on the thermodynamics of internal combustion engines doesn't suggest this is true.

Higher octane fuels contain essentially the same heat energy as lower octane fuels. The difference is higher octane fuel requires more energy to ignite and burn, thus avoiding detonation. So if it makes chemical and physical sense why this results in less power, I'd like to see the data on it. Always ready to learn something.

But I do agree the F4i runs fine on the 87 octane it's spec'd for. Burning 93 just wastes money.

 

I put high quality H2O, brewed by Bobby Bouche, in my bike.

 

Agreed, and EVEN if it is true, it would be so incredibly neglible on these bikes it isn't worth discussing.

Again, not enough worth discussing, just burn something over 87 and don't spend much time worrying about it.