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I am new to riding and have a K7 600. I have always used the hightest octane gas for the service station. But after reading around the site im seeing that I may have been doing wrong. Whats the best octane to use on my 600? I have a full yosh if that makes any difference. Thanks
 

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87... as stated in the manual. Even Sportrider magazine did the octane test and the Premium only netted 1 hp and that's within the margin of error.

I remember trying premium for a couple tanks to see if I get better mileage. Got the same amount as Regular. My Butt Dyno didn't notice any increase either... the only time you should be using premium is if you changed the compression of your bike (600) or if you specifically tuned it for that gas...

If want to put in premium go right ahead. It's your bike. But don't use premium just because you think it will boost the bikes performance.
 

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I use premium only because the cost to fill the tank in my bike versus my car is so minimal. I see my bike as my baby so I don't mind paying a little extra even if the benefits have proven to be small. Just my 2 cents
 

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I would assume that Suzuki has spent millions of dollars in research and development over the years on GSXR's to come to the conclusion that 87 octane will satisfy your stock bike (adding an exhaust is not going to effect your need of higher octane). Then again, you could listen to your friend(s) who says to use the highest octane you can find to include exotic 100+ race fuel because you'll gain power. If it makes you feel better, run 89 or 91, or 93...it's your bike.
 

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lol..i love the kids that run the more expensive gas when 87 octane will do just fine...morons!!
 

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My Butt Dyno didn't notice any increase either...
:laughingr Thats the funniest shit I have heard all day!....Wait its only 9am. But I will have to borrow that phrase from you when dude next door thinks his 96 cbr can whoop me. I will let my "Butt Dyno" decide!
 

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I used what is recommended which is 91 or higher. Also I thing it was 2 wheel tuner did a story on it last year and found enwhere from a 1-5 HP difference depending on cc's of the bike. The way i see it is if the manual calls for 87 use 87 if it calls for 91 use 91 or higher. You wouldn't buy a Lambo and put 87 in it would you??????
 

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some say the 97 is cleaner but its no cleaner than the other octanes at that station. I happen to like the shell gas because they make their gas look all fancy with the nitrogen enriched gas to help keep the valves clean. i dont think very many people are going to notice the difference on the street but I personally try to stay with the manual.
 

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I used premium only because that's what Suzuki recommended for my bike.
 

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I use premium only because the cost to fill the tank in my bike versus my car is so minimal. I see my bike as my baby so I don't mind paying a little extra even if the benefits have proven to be small. Just my 2 cents
I agree it's only about 75 cents more per tank. I use only bp or shell. I try to stay way from small stations
 

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I guess we are morons a whole 75 cents more per tank. I'm no mathmatcian but 75 cents won't bankrupt. Most of us
+1...If the big grown up wants to save a buck every fill up let him
 

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87... as stated in the manual. Even Sportrider magazine did the octane test and the Premium only netted 1 hp and that's within the margin of error.

I remember trying premium for a couple tanks to see if I get better mileage. Got the same amount as Regular. My Butt Dyno didn't notice any increase either... the only time you should be using premium is if you changed the compression of your bike (600) or if you specifically tuned it for that gas...

If want to put in premium go right ahead. It's your bike. But don't use premium just because you think it will boost the bikes performance.
I agree. One hp one way or the other is meaningless, and a two or three octane points won't make a measurable difference anyway.

The manual and the stickers on my 04 750 say that you need 91 Minimum. No one sells 91 anymore which leaves you with the few gas stations that sell 93.
You might want to double check your manual - I'm pretty sure 04/05 is specified for 90 or greater. At least my 05 750 is. But your point is well taken - you obviously should use the next grade up that's available in your area. Our choices are 87, 89 or 91 but no 90 so I run 91. By the way, if gasoline in your area is oxygenated (i.e. 5-10% ethanol), your actual octane runs a couple points higher than its rated octane, so you could actually get by with 87 or 89 if you are using oxygenated fuel. Yes I've done it.

:arsenali use mid-grade because i feel like it
Well okay then. How do you argue with that.

I guess we are morons a whole 75 cents more per tank. I'm no mathmatcian but 75 cents won't bankrupt. Most of us
The cost isn't really the point. I would agree with you that 75 cents more a tank is nothing if it actually results in a benefit to your motor, but it doesn't. In fact, it is a disbenefit. As the octane rating increases, the burn rate of the fuel decreases. A higher octane fuel than is specified for your bike will result in less complete combustion, less efficiency and power, and more tendency to foul, and it will not result in increased protection from detonation and pinging. Of course, two or thee octane points isn't going to make a measurable difference in power and efficiency and yes you would rather err on the high side, but if you use a substantially higher octane than your bike requires, you will see fouling and deposition in the plugs and combustion chamber over time.

As mentioned, many times in fact in various octane threads, high octane gas does NOT contain any more energy content than standard gasoline. It does, however, allow the use of higher compressions and/or ignition timing advance. If you want to actually see an increase in power by using a higher than specified octane, you must either mod the engine to increase the compression ratio, or advance the timing.
 

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I used to think that the more octane the better but I was told once on this site that if youre under warrenty and something goes wrong internally with the motor and somehow they become dicks and show you were not using the proper fuel....youre screwed plain and simple. Same for break ins on new bikes.
 

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I used to think that the more octane the better but I was told once on this site that if youre under warrenty and something goes wrong internally with the motor and somehow they become dicks and show you were not using the proper fuel....youre screwed plain and simple. Same for break ins on new bikes.
I doubt that you would have a warranty denied by using a higher than rated octane (it is a minimum octane specification) unless you go ridiculously high, but certainly if you use a lower than recommended octane yes, you could be denied a warranty claim if the dealer could establish that it was the reason for the problem for which you are requesting service.
 
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