Octane boost, do or don't

Modern fuel doesnt stay good for long. If you run old gas itll crap out your carbs or injectors & cause detonation and poor ferformance. I like to use fresh fuel every time out. I also get the non oxygenated with no ethenol added 92 octane.
Octane boosters are a scam. IMHO
goodluck

91 polaris indy 650 RXL EFI

I hate messing around with gas cans, I'd much rather pull up and pump it in.I'll probobly just run 89 octane all the time.Believe me, the gas never has enough time to get old around here!

Dude, don't freak out.

here is the low down on octane boosts there are a few brand that i would not trust i have done quite a bit of research on this topic and here is what i have learned.octanes main job in fuel is to prevent preignition of the fuel so the higher the octane rating the less likely you are to melt a piston due to predetination. on highly modified engines this is a must. removing head gaskets is one such modification. 104+ is a brand i have been using religiously and trust it with my sleds life. most snowmobiles today with no mods are ok to run 89 but you do some investigating yourself if you are unsure.

Vmaxyam

Want an alternative. Go to Sherwin Williams paint store and buy a gallon of Xylene. It will work lots better than any octane booster. It contains the additives that are in all octane boosters and fuel injection cleaners and it will clean fuel systems.

I joke about this since I have never tried it in my sled, but I do mix it 1 gallon to 4 gallons of 93 octane to produce 99 octane race fuel. I use it in my Buick Grand National when I use a high timing race chip at the track. GN guys swear by it. Approx $6.00/gallon.

'96 Ultra Sp
'97 SPX

oooooooooo xylene is a paint thinner isn't it? I would think that would also thin out the oil wouldn't it?

Vmaxyam

Yes it's paint thinner. When we mix it fou our cars we usually drop 1-2 ounces of marvels mystery oil in the mixture for lubricant...to replace the lubricants found in gasoline.

There is obviously a difference between 2-stroke and 4-stroke motors and the fact that sleds use oil with gas to lube would make the thinning a problem.

I really don't recommend using this mixture in sleds....just thought I would throw out some useless info !.

BTW...we have tried octane booster in our cars when we change the timing in our chips and NONE of them work with good results. The only way to safely get more octane in our cars is to add a mixture of leaded race fuel (which kills our car's O2 sensors) or use Xylene.

'96 Ultra Sp
'97 SPX

reg $3 Octane boost rateings are for increases to 80 octane fuel. So if you add it to 89 octane youll get 89.5 octane!
You learn these things at the race track!
blowers and Nitrous require a higher octane and regular $3 booster doesnt do anything to prevent detonation!
104 boost is like $8 a bottle! OUCH
NX also makes some but its even more$$$
The thing is if your not getting Knock/detonation you dont need the higher octane it just burns slower and makes the sled run richer than it needs to.

BEWARE of the small gas station!!! they delute gas to increase profits!!!
I always get my cars fuel at the same station. I can tell the difference from station to station!!!
ultra GN learned the trick! Live and learn. I go racing at the dragstrip ever chance I get! BIR, Chicagoland IR, Gateway IR, get out and see the asphault sleds run 9s at 140mph.

91 polaris indy 650 RXL EFI

What do you dilute gas with or do you mean mix lower octane with higher octane fuels to blend the octane rating down?

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I think.... therefore I sled
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Two '94 Indy XLT SKS

They add cheap chemical additives to the fuel. It cost 50cents a gallon for the idditive so they add a couple hundred gallons at night after the tanker leaves. Then they justify it too themselves by saying there just rich tourists!

91 polaris indy 650 RXL EFI

Well as long as they don't add diesel into it I think I'm ok. We don't have a lot of 'small' operators here in our part of Canada. Maybe only 4 in all Greater Vancouver. The rest are the reputable chains but I'm sure even on occaision some franchise owners may get a little overzealous with their business practises. Hard to prove I would think though.

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I think.... therefore I sled
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Two '94 Indy XLT SKS

Thats why we have fuel delivered at the farm where I live.I have the tank filled 2-3 times a year.Thats much better than goofing around with cans or trying to find a gas station along the trail.
I still havn't tried any octane boost yet, but I think I may try it.I dunno.I'll finish breaking it in first.

Dude, don't freak out.

a gas station in a nearby town got closed down for a few days because they got something in their fuel. it ruined the engine of one of my friends truck- he got a new one courtesy of the station, and many other people had to have the fuel removed from their tanks after their vehicles died when done filling.

it isn't a sport if you can't die doing it

'99 XC SP 500