| General Discussion General Motorcycle Discussion. If it's related to motorcycles in any way, and doesn't fit into a more specific forum, it goes here. |
09-23-2007, 4:12 PM
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#1
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Join Date: 10-09-2006
Location: PA
Age: 23
Posts: 176
Reputation Power: 7
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What Kind of Gas Do you put in your bike?
So, I was talking with my friend yesterday, and I mentioned that I put premium gas in my bike. He says that he puts regular in his bike, and we kind of had this argument about which is better for the bike, him arguing that premium dirties the engine faster and my argument being it lets you get the most out of your engine. Any thoughts?
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09-23-2007, 4:56 PM
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#2
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Join Date: 01-11-2005
Location: Kansas Citeeeee, MO USA
Age: 44
Posts: 902
Reputation Power: 9
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Re: What Kind of Gas Do you put in your bike?
Higher octane does burn slower. Think about that.
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09-23-2007, 4:59 PM
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#3
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Join Date: 03-20-2007
Location: Townsville, QLD Australia
Age: 30
Posts: 95
Reputation Power: 7
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Re: What Kind of Gas Do you put in your bike?
i use 98 unleaded 
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09-23-2007, 5:05 PM
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#4
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Join Date: 12-29-2001
Location: New Jersey, USA
Posts: 6,731
Reputation Power: 25
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Re: What Kind of Gas Do you put in your bike?
I use regular. I believe that's what the owner's manual states. I doubt putting in premium will hurt. I used to run premium in it, particularly on the track, but with gas prices what they are, I went back to regular and I can't tell a difference in performance.
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09-23-2007, 5:08 PM
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#5
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Join Date: 05-28-2007
Location: SW Ohio "Buckeye Country"
Age: 44
Posts: 511
Reputation Power: 6
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Re: What Kind of Gas Do you put in your bike?
Once you reach an octane level that allows the bike to run the maximum ignition advance curve without detination, then you're golden. Running any higher octane above that, is purely a waste of money. Premium running more "dirty" than regular is pure weapons grade BS.
__________________
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"Political correctness is tyranny with manners." 
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09-23-2007, 5:24 PM
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#6
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Global Moderator
Join Date: 08-05-2007
Location: KY
Posts: 1,730
Reputation Power: 30
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Re: What Kind of Gas Do you put in your bike?
Phadreus couldn't of said it any better...
 .. My bike says to use premium...
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09-23-2007, 6:11 PM
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#7
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Join Date: 05-31-2007
Location: Washington
Posts: 124
Reputation Power: 0
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Re: What Kind of Gas Do you put in your bike?
Chevron Super. Red, white and Blue. It's all my dad ever used.
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09-23-2007, 6:13 PM
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#8
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Join Date: 04-16-2006
Location: Middessa Tx
Posts: 1,640
Reputation Power: 11
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Re: What Kind of Gas Do you put in your bike?
I use reg in my bike. Sometimes i use premium, but when i had my bike on the dyno i tested with premium and with reg. There was a tad more power with the reg petrol.
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09-23-2007, 6:56 PM
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#9
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Join Date: 05-28-2007
Location: SW Ohio "Buckeye Country"
Age: 44
Posts: 511
Reputation Power: 6
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Re: What Kind of Gas Do you put in your bike?
Originally Posted by rokitt51
I use reg in my bike. Sometimes i use premium, but when i had my bike on the dyno i tested with premium and with reg. There was a tad more power with the reg petrol.
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Now that is totally surprising to me. I would expect it to be the same at best or less with regular at worst. I wonder why you got less hp with Premium? 
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"Political correctness is tyranny with manners."
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09-23-2007, 7:03 PM
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#10
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Join Date: 04-21-2007
Location: sacramento, Ca
Posts: 29
Reputation Power: 0
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Re: What Kind of Gas Do you put in your bike?
unleaded 
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09-23-2007, 7:18 PM
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#11
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Join Date: 01-11-2005
Location: Kansas Citeeeee, MO USA
Age: 44
Posts: 902
Reputation Power: 9
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Re: What Kind of Gas Do you put in your bike?
Originally Posted by Phadreus
Now that is totally surprising to me. I would expect it to be the same at best or less with regular at worst. I wonder why you got less hp with Premium? |
That's the way it should be. These are short stroke engines and that particular fuel is designed to burn slower.
If it burns cooler, deposits might build up as I discovered after a 45,000 mile teardown which had significantly increased compression due to nearly 1mm of deposits on the piston, head, and valves. From what I saw, it might be possible to create more horsepower with years of increased octane at an increased risk of detonation. Put that in your pipe and smoke it!
After cleaning that combustion chamber varnish, I'm back to using the cheap gasoline.
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09-23-2007, 7:24 PM
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#12
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Join Date: 02-19-2007
Location: adelaide south australia
Posts: 40
Reputation Power: 0
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Re: What Kind of Gas Do you put in your bike?
Whichever it runs best with
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09-23-2007, 7:30 PM
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#13
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Join Date: 08-18-2007
Location: Virginia, USA
Posts: 52
Reputation Power: 6
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Re: What Kind of Gas Do you put in your bike?
You can put crappy gas that is 93 (R+M)/2 rated octane and it'll gum up your engine the way dattaway describes. The new gasohol should help out if you use Premium premium. Shell and BP/Amoco are the two best formulations out there, the slightly higher price is warranted because of the amount of additives they use.
Using the lower octane is like running lean, the flame front propagates faster increasing power, but there is a tradeoff- more detonation in the high compression engines we're talking about.
Keep your gas fresh and buy premium brands.
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09-23-2007, 8:37 PM
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#14
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Join Date: 08-16-2006
Location: Magnolia Texas, (AKA: in the woods)
Posts: 229
Reputation Power: 7
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Re: What Kind of Gas Do you put in your bike?
Unleaded.
It's the only way to go.
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09-23-2007, 8:42 PM
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#15
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Join Date: 05-28-2007
Location: SW Ohio "Buckeye Country"
Age: 44
Posts: 511
Reputation Power: 6
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Re: What Kind of Gas Do you put in your bike?
Originally Posted by Gigolo Jason
Unleaded.
It's the only way to go.
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  Excellent!
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"Political correctness is tyranny with manners."
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