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Discussion Starter · #1 ·
I always use the highest I can on my bikes but a few of my friends tell me that 87 octane is fine and I am just wasting my money on anything higher. Are they just cheap or am I wasting my money? I have a 2002 GSXR 600 and a 2003 Yamaha 1100 V-Star. Let me know what you think!

Thanks to all!
 

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The octane rating is defined the resistance to detonation. The main factor in deciding what octane is safe to run is determined by the commpresion ratio of your engine.If it is 9:1 or lower 87 octane should be fine, but anything higher than that and i would definitley run 92/93.
 

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I run 87 on my 600. I belive manufacturers suggestion is 86 min. Running anything higher than what the manufacturer suggests is wasting money unless you have internal engine mods done that may make the bike suseptible to detonation.

octane does nothing for power. Race fuels are usualy high octane, but the power gaining factor in them is that they are leaded and oxygenated. Not the octane. Some race fuels are low octan.
 

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Motojoe_23 said:
I run 87 on my 600. I belive manufacturers suggestion is 86 min. Running anything higher than what the manufacturer suggests is wasting money unless you have internal engine mods done that may make the bike suseptible to detonation.

octane does nothing for power. Race fuels are usualy high octane, but the power gaining factor in them is that they are leaded and oxygenated. Not the octane. Some race fuels are low octan.
Manufaturers stickers say run 91 octane, but you want to run the lowest octane you can without pinging.

VP's most horsepower producing fuel is like a 92 octane which is the lowest they make.
 

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use the highest octane (in pumpgas that is) and go to BP if u got one local near you. They add chemicals to there gas to kill off water and other crap. I did research when i was in school on gas stations and they were the only one who did it. They add some kind of crap i forget the name. It'll be healthier for your bike
 

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if you run anything higher than 87, you should go to an gas staion with seperate pumps for each octane, the guy before you could have pumped 87 and the line is still full, so now your getting a half gallon or so of 87 for the price of 93. not a big difference for cars, but for us bikes thats 1/8th of our tank.
 

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very true, Some on new ones have it. But alot of the older gas stations have them. Only one octane will come out thru the pump. Just ask around to see who has the best gas.
 

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well i have an 02 600, and i do believe it says 87 octane is required. I still put 91.

But i know with cars..its always goes by compression..higher compression always needs higher octane (10.0:1 +). Not sure on bikes, cause i know bikes are way up there compared to cars..
 

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compression is a big factor. My cousin had a 900 and had some motor work done to it. Just a little work nothing serious. He tried running 87 and it would ping. Ran higher octane and it was fine
 

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well what i meant was as for cars.. 10 up is high compression, and pretty much all cars with a compression of 10 or higher needs the highest pump octane

oh a bike....i know pretty much you won't see a bike iwht 12 or lower which is fucking high compared to cars. Like i said, i have a 02 600, but on the tank it says 87 required...

hmmmm :headscrat
 

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every vehicle says its 87 required, my quads said it, my car says it. Its for idiots who wanna go cheap ...... probly try to run there car on urine
 

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i use 91 all the time, and even throw in NOS octane booster 3-4 times a month........gotta love flames outta the yosh :thumbup:
 

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What is the stock, compretion for a gixxer 600 ? one books says like 11.? to 1 and the sevice manual i downloaded said 12to1, so what is corect, and yes 87 is the lowest and if you have some good mods you should go up in the octain and maybe check what plugs you should run hot cold ex
 

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I know my 2000 750 and my 1000 both had stickers on them saying to use 91 octane or higher.
 

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You should always use the lowest octane you can without pinging. I agree with Ski (althought I've never read anything from him that I disagree with) in saying that Suzuki recommends 91 for the GSXR. Running a higher octane than required can actually be damaging to your engine, and doesn't provide any real benefit. If you want to know the details, I can try to explain.

PS, I've also heard BP is the best place to buy gas.
 
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