Octane for stock sleds

Hoosier

Well-known member
What octane do you run with stock sleds??? I never think too much about it, other than buying nonethanol whenever available. I have an 06 Fusion 600 that I just rejetted, and in the process of reading all I can about jetting, it seems that lots of people run the best octane they can find. I didn't know if it made a difference or not.
 

beakjones

Member
What the manual calls for. Higher octane = less combustible. That said... if the premium is ethanol free I run that.
 

lvr1000

New member
A sled design to run 87 will not have any performance benefits running higher octane. That said, while riding with the wife, I use CC and fill from the same hose, highest octane at the pump cause my stock turbo calls for 91 . As beakjones stated, Higher octane = less combustible, try starting a sled running full race fuel (C16) at -10 or colder.
Because of octane loss while sitting for extended periods, put Premium (no E) in at last fill.
 

arcticgeorge

New member
I would run premium whenever possible, Sno-Tech described it like this,the higher the octane number the cooler burning fuel. So the number is an actual btu rating. And running the higher octane helps resist pre ignition and detonation(unwanted combustion before or after top dead center)
 

indy_500

Well-known member
run premium at all times or non ethanol if you can. Of course i'm being kind of hypocritical as I haven't put premium in my tank in a while because its too dang expensive LOL I guess 2850 miles so far on the season puts a hurt on the ole wallet.
 
I would run premium whenever possible, Sno-Tech described it like this,the higher the octane number the cooler burning fuel. So the number is an actual btu rating. And running the higher octane helps resist pre ignition and detonation(unwanted combustion before or after top dead center)
This is also what my dealer, (polaris but it's probability the same for all manufacturers)
told me the higher the octane the less chance you have for pre ignition = good for the motor.
Always run premium were possible, and yes premium cost more but cheaper than a motor.
Think Snow!!!
 

indy_500

Well-known member
Always run premium were possible, and yes premium cost more but cheaper than a motor.
Think Snow!!!

Hence why I still have an old Carbed Liberty motor sled. I trust the dang thing even with e85. Heck I even ran it straight piped from Twin Lakes to Toivola last weekend when my can broke! I just don't trust any of this new stuff not going to shell out 10k and make payments on it every month to own a sled that lasts 4-5k and boom. I can comfortably put regular e10 gas in my sled with no problem just got to be a little more precautious for storage.
 

ezra

Well-known member
if u run 92 in a 87 sled u are doing nothing but wasting money and loosing power.
when running any performance motor u want to run the lowest poss octane u can get away with.
a stoker built to run on 87 is more than likely actually built to run on 82 the oem are not new to this game they have to warranty there stuff so always built on the safe side
 

Skylar

Super Moderator
Staff member
I have about 743 miles on my 2012 RMK 800 now. I think I have put premium in 6-7 times now. Otherwise it has been 87.
 

skidoorevrider

New member
I also have a 06 600 fusion. I have ran nothing but 87 octane in it. has 6800 trouble free miles on it

What octane do you run with stock sleds??? I never think too much about it, other than buying nonethanol whenever available. I have an 06 Fusion 600 that I just rejetted, and in the process of reading all I can about jetting, it seems that lots of people run the best octane they can find. I didn't know if it made a difference or not.
 
G

G

Guest
It is also a good idea to buy your gas at a place that sells a lot of gas so you know it hasn't been sitting there getting old and maybe full of water.
 

Hoosier

Well-known member
Thanks for the tips. Since I just re-jetted mine and because I'll be lucky to put 1000 miles on it over the 4 days I ride this year, I'll put the higher octane in it the manual specifies. If I remember right, I think it says 89 if gas or 91 if 10% ethanol.

Even if the difference is $0.50 gallon (probably more like $.20), I'll buy less than 100 gallons of gas this year, so the difference will be less than $50.
 

xcr440

Well-known member
It is also a good idea to buy your gas at a place that sells a lot of gas so you know it hasn't been sitting there getting old and maybe full of water.

Doesn't the gas and water separate? Water to the bottom? I would think you'd potentially only have this issue if you hit a tank that is really low.

Most of the water that would get in your tank would be from blowing snow, or not checking the nozzle before you stick it in your tank. A little shot of ISOPROPOL would take care of any potential issue here.
 
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