
bluemonster1
LIFE MEMBER ONLY ONCE!!!
I usually run premium gas anyways,but add about 15 ml of octane enhancer(booster) with the gas.Just wandering how much can one increase the octane level with this stuff. Reason for asking is ...what happens if you are on a trail and stop to get fuel and a lot of places don't sell premium gas,just regular and midgrade., could I add enough Octane booster to raise fuel to premium level? And if so,how much would I add to my tank? Just curious. 

terret725
New member
is ur sled stock or have u done any mods? if its stock dont worry about running reg. chances are ull hit a tree way befor u blow it up. i have my head shaved and gaskets removed and only run premium. the higher the octane u wont get any more HP or perfomance out of it unless ur sleds motor is built for running high oct. onlt think high oct does is pervet detination for high compression motors. so if ur sled is stock i wouldnt wast the money on the octane bost but if u have pipes or done a head or gasket mod id say keep some in ur trunk just incase u do pull up to a station that only has reg. then in that case i would only add as much as the bottle says.


2ooosrx
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There are many instances where I have used regular in my sled instead of premium. You have nothing to worry about.

bluemonster1
LIFE MEMBER ONLY ONCE!!!
yes I did the head gasket mod and run premium.If I have to use less then premium on the trails,I will then add Octane boost to tank just in case.But wandering how much will it raise octane level.According to the bottle I would only have to add 15ml to a full tank. That doesn't seem like a major amount that would make a difference,but I could be wrong there.
Exciter570
Member
I blew mine up last year running 93 octane. Running quad pipes and did a lake run at WOT and pop, sled shut down, had it checked out and had some detonation on the PTO cylinder. Sled is jetted per bender's specs, was running prem. fuel and still popped it. Run the highest octane you can and a bit of booster is prob. not a bad idea. I've been looking for the best oct. booster solutions and have come across a few that look interesting. Check this one out http://www.kemcooil.com/product_info.php?pId=61
just not sure if it would be safe to run in a 2-stroke engine.
just not sure if it would be safe to run in a 2-stroke engine.
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bluemonster1
LIFE MEMBER ONLY ONCE!!!
That is interesting.
Exciter570
Member
Typical boosters will only raise octane a very small amout. Stuff you buy at auto stores that say they raise the octane by 2, 3, 4, or more points actually mean that they are raiseing it by .2, .3, .4 octane points etc. i.e. 93 octane to 93.3 octane, whoopdie do! So when you say that it doesn't seem like adding such a small amount would do anything, you're right, that's why it's difficult to find a product that actually works, but is safe to run in snowmobile engines. I called the company that makes the booster that I linked for you above, and they said that it was safe to run in snowmobiles, of course. Don't know, and am still leary about trying it till I do some more homework on the stuff. It'd be nice if evey station carried 100 octane, but that's never the case, you're at the mercy of whatever the trail stops have, and many times it's 87 oct. only!!! Makes our piped engines go 

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Dave_Vmax600
New member
When i got ym sled running with the pipe, bigbore, intake etc... i assumed right away that i had to run 91 in her.....but i noticed that if i used 89 (regular) it runs like a champ .....just letting you know that running the good stuff isnt always the best..unless your high compression.....in that case if you ran low grade fuel you would get pre-detonation.
Dave_Vmax600
New member
Exciter570 said:Typical boosters will only raise octane a very small amout. Stuff you buy at auto stores that say they raise the octane by 2, 3, 4, or more points actually mean that they are raiseing it by .2, .3, .4 octane points etc. i.e. 93 octane to 93.3 octane, whoopdie do! So when you say that it doesn't seem like adding such a small amount would do anything, you're right, that's why it's difficult to find a product that actually works, but is safe to run in snowmobile engines. I called the company that makes the booster that I linked for you above, and they said that it was safe to run in snowmobiles, of course. Don't know, and am still leary about trying it till I do some more homework on the stuff. It'd be nice if evey station carried 100 octane, but that's never the case, you're at the mercy of whatever the trail stops have, and many times it's 87 oct. only!!! Makes our piped engines go![]()
i was going to say the exact same thing about the .2.3.4.......you think it makes a difference but really it doesnt.....
Do some searching in the archives as this was covered well last year.
2001SRX=Fast
New member
yea i remember threads upon threads on this subject
SRXtrafast
New member
Would lower octane make my sled more difficult to start with heads shaved .010? Last year in Quebec it took alot more pulling at the start of the day, even after I had added Klotz octane boost. I also found out that where I had filled up it had a rating of 80 

Exciter570
Member
80 octane just can't be good! I guess it's possible that it could make it hard to start but the lower the octane the more volatile or explosive the fuel is therefore burning hotter so if you look at it that way it should fire right up. The purpose of the higher octane is that it burns cooler so your egt's are lower which reduces the chance of pre-det. and burndowns.
srv540
Member
guys ever mix 100LL and 93 50/50???? I have had good luck with it.
Exciter570
Member
srv540 said:guys ever mix 100LL and 93 50/50???? I have had good luck with it.
That's the best way to go, but what happens when you run dry and need a fill up out on the trail? That is my biggest issue, having an alternative to the 50/50 mix while out on the trail. I'll do the mixing before leaving for a ride, but still need some kind of a solution for those mid day trail side fillups. Could go back to stock, but that's no fun!

SRXtrafast
New member
srv540 said:guys ever mix 100LL and 93 50/50???? I have had good luck with it.
Before running the 80 I had that exact mixture which works really well and started the way it should.As I said earlier with the 80 I used Klotz octane boost and had to nearly double the mixture as to what was recommended so as not to lose rpm's. It still wasn't perfect but alot better than starting out at 82-8300 and then dropping to 75-7800 rpm's.I only tried to race once when that was going on. It can't be good for the engine
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