Octane Level

[Crank Case]

I have a one month old '05 busa. The Owners Manual suggests 87 octance fuel. I have used 91 octane since purchasing the bike but wondered if the higher octance is the best for overall performance and serviceability. What do others think?

 

[Jynx]

Use 87 with a stock motor. Any higher, you are wasting your money.

 

[bacharles]

I use 91 and sometimes 93 octane.

 

[wickedsprint]

The pumps here are 85/87/91, if the pump is one of the shared nozzles, I use 91 since the first gallon could be leftover 85, if the pump is a dedicated nozzle per grade, I will use the 87.

 

[DAB]

I use 87 in my '04 as per Suzuki's recommendation and haven't had any problems.

 

[FloydV]

I was curious about the regular grade recommendation also. Someone else said that the Bus can get away with it because of the small displacement per cylinder. The smaller (than big Vs) pistons have a smaller "wave front" or some such. I use the 93 octane because I'm so deaf I'd never here pre-detonation, and 5 gallons is a cheap fill anyway.

 

[Rycardo]

I use 100 octane, in Portugal we have 95, 98 and 100.

 

[shortBoarder]

I use 100 octane, in Portugal we have 95, 98 and 100.

Octane numbers are measured differently in the US; Euro octane numbers are typically 5 points higher for the same octane value:

Euro octane 100 = US octane 95

 

[stkr00]

If you do a search for the word "octane"...you'll have a lot of reading on the subject.

I use 87...even at the track...no problems

 

[CorrodedAlien]

Hmmm, this seems to come up about every 3-5 months in all the forums....

Check the past threads/polls ----> 87 is all you need... Unless you have an unlimited budget.

 

[cache]

I use 87...even at the track...no problems

AM/PM pump gas, 87 octane, ran my personal best this year at the track on it!!

 

[busa854]

I was wondering about this myself. I've been using 93, just because i assumed it would be better for it. I'll fill with 87 next time. Thanks for the info.

 

[Johnnycheese]

I use 87...even at the track...no problems

AM/PM pump gas, 87 octane, ran my personal best this year at the track on it!!

yep because you get more ponies seen it on the dyno, draining tank back and forth the 87 always made more