gas????

coorsloader315 said:
I have a 2001 sxr 600 and was wondering if im wasting my money by running premium fuel in it( 93 octane) ?
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Stock SXs + SXRs["red heads"] only call for regular fuel...I would run mid grade 89[just to make sure you are getting at least 87!!!]
Higher Octane then you need is a waste of money + actually hurts your performance.
JM.02c
 
your sx600r is recommended to just run 87. i run 87 in my 700 all the time when i pick up fuel from town and other larger fuel stations. when i'm in the backcountry and up i run 90 some though to make sure its good enough
 
sideshowBob said:
Stock SXs + SXRs["red heads"] only call for regular fuel...I would run mid grade 89[just to make sure you are getting at least 87!!!]
Higher Octane then you need is a waste of money + actually hurts your performance.
JM.02c
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Interesting..how can it hurt performance?
 
This question gets asked at least once a week. Try doing a google research on octane & read; read & read some more. You will lose hp & performance by running more octane then your manufacterer recommends.
 
backwoods said:
your sx600r is recommended to just run 87.
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Actually all 2stroke yammies excluding the SRX require 88 octane OR higher via your owners manual.

haven said that where one gets 88 i have now idea. I would and do run no lower then 89 that's a common grade and will work fine and is just a little more then yamaha recommends witch is perfect.
 
Sometimes the 87 at the pump is in better shape than the 89 at the same station, because it is in higher demand and sets in the tank for a much shorter time period before being used.

My opinion is that 87 is fine for these sleds except those that are modded or initially designed for higher. Most 87 at stations that pump a lot of it would pass testing for 88. . . . of course the rating is actually the average of 2 tests.

I watch what most people are using at any given station. If lots of cars use the station then the 87 is likely fresh fuel.
 
maxwell said:
You could use the argument of ethanol in the lower grades of fuel, and usually not in 91 ocatane
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Actually (in Michigan anyway), you're more likely to find ethonal in mid and high octane fuel than in low octane fuel.
 
snomofo said:
Actually (in Michigan anyway), you're more likely to find ethonal in mid and high octane fuel than in low octane fuel.
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Interesting,

In MN and WI, they usually do not have ethanol in the 91 octane fuel.
 
Yamadooed said:
If you blend ethanol to regular fuel you get high octane premium... They been do'n it here for years...
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yep, have been well aware of that for awhile, I run E85 in my race car.
 
ethanol is used to raise the octane in pump gas. the problem is just because it says 87 on the pump does not mean it's 87. tests have been done that show octane levels can be much lower than posted. 87 could be 77 or just about anything. safest bet is to use premium, motor rebuilds are expensive.
using 93 instead of 87 ( if in fact that's really what your getting ) will not give any noticeable decrease in power. it's only 6 octane points. in 1993 tim bender & i took my trail ported ( 12:1 comp. ), quad piped vmx4 to dynotech. 178 hp on mobil 91. we had a fresh can of tim's unical 108 octane offical nascar race fuel w/ us. we ran the sleds fuel line into the can - 174 hp. repeated the test & got same results. that's 17 octane points higher & only lost 4 hp.
bob
 
maxwell said:
Interesting,

In MN and WI, they usually do not have ethanol in the 91 octane fuel.
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Actually, ethanol will typically be in ALL grades of fuel here in WI.


Run 87 unless your sled has been modified, or if it is required to be using higher from the factory.

I have used 97 ethanol gas in my toys since we switched to ethanol added fuels about 16 or more years ago in South East Wi, and as of the last few years, ethanol enhanced fuels are in pretty much all gasoline now.

I have yet to have one burn down from using ethanol added fuels.
 
typically premium sells for .20 higher than 87. typically you add about 5 gallons of fuel at each fill up. For $1.00 more per fill up I feel alot more comfortable not to have a detonation issue due to poor fuel. Maybe it is just a comfort level but that is just me. My sxr has a milled head of .020 so compession is a little higher, the Viper is stock and the 600 SX and phazer are all stock. After every trip North I add 6 oz. of Sta Bill for Ethonal, Marine formula. Not sure if the last trip could be our last for the year. Once of prevention worth more than a pound of repair. Al
 
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