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I am using a 30 gallon caddy with 93 octane gas, how much Toluene do i need to add to make 95 octane.
 

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I am using a 30 gallon caddy with 93 octane gas, how much Toluene do i need to add to make 95 octane.
You might try hitting up DaytonaTunnel here on the boards. If I remember right he mixes some tolulene in his fuel. Not sure if it adds 2 points octaine or not. Some how it is suposed to help with detonation.
 

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79 Sanger Picklefork
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Formula

Is this what you are looking for..


Homemade octane booster formulas.
Note: The prices for the tolune is a lot more expensive today. I could be wrong but I think tolune and xylene is about $14 per gallon today.

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Formula #1 - Toluene
R+M/2.........114
Cost...........$2.50/gal
Mixtures with 92 Octane Premium
10%...........94.2 Octane
20%...........96.4 Octane
30%...........98.6 Octane
Notes: Common ingredient in Octane Boosters in a can. 12-16 ounces will only raise octane 2-3 *points*, i.e. from 92 to 92.3. Often costs $3-5 for 12-16 ounces, when it can be purchased for less than $3/gal at chemical supply houses or paint stores.

Formula #2 - Xylene
R+M/2.........117
Cost...........$2.75/gal
Mixtures with 92 Octane Premium
10%...........94.5 Octane
20%...........97.0 Octane
30%...........99.5 Octane
Notes: Similar to Toluene. 12-16 ounces will only raise octane 2-3 *points*, i.e. from 92 to 92.3. Usually mixed with Toluene and advertised as *race formula*.

Formula #3 - Methyl-tertiary-butyl-ether (MTBE)
R+M/2.........118
Cost...........$3.50/gal
Mixtures with 92 Octane Premium
10%...........94.6 Octane
20%...........97.2 Octane
30%...........99.8 Octane
Notes: Oxygenate. Very common in octane booster products. Has lower BTU content than toluene or xylene, but oxygenate effect makes the gasoline burn better and produce more energy.

Formula #4 - Methanol or Ethanol
R+M/2.........101
Cost...........$0.60 - $1.75/gal
Mixtures with 92 Octane Premium
10%...........94.3 Octane (Methanol)
10%...........94.7 Octane (Ethanol)
20%...........Not Recommended
Notes: Methanol is wood alcohol. Ethanol is grain alcohol and found in Gasohol in 10% ratios. Both alcohols are mildly corrosive and will eat gas tank linings, rubber and aluminum if used in excessive ratios. Main ingredient in "Gas Dryers", combine with water.

Formula #5 - Isopropyl Alcohol and Tertiary Butyl Alcohol
R+M/2.........101
Cost...........$0.60-$1.50/gal
Mixtures with 92 Octane Premium
10%...........94.5 Octane
20%...........Not Recommended
30%...........Not Recommended

Notes: Similar to Methanol/Ethanol. Isopropyl Alcohol is simply rubbing alcohol.

Sample Mixture
To make your own octane booster, it is easiest to make up a large batch, and then bottle it up in "dosage-size" uses.
Below is the basic formula of one of the popular octane booster products. To make eight 16 ounce bottles (128 oz = 1 gal):

100 oz of toluene for octane boost
25 oz of mineral spirits (cleaning agent)
3 oz of transmission fluid (lubricating agent)
This product is advertised as "octane booster with cleaning agent *and* lubricating agent!". Diesel fuel or kerosene can be substituted for mineral spirits and light turbine oil can be substituted for transmission fluid. Color can be added with petroleum dyes.
 

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Information

Extremely good information there. I printed it out for future reference. The "old school" fuel mixers were a breed all by themselves, and usually standing in the winner's circle.....Nothing like the smell of well prepared race gas......Ray
 

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21 Daytona
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Toluene purchased here is $19 per gallon cheaper if purchased in bulk quanities.

Good info:)devil
 

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mo balls than $cents$
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you guys just keep an eye on your accellerator pumps on the carb/s and watch fuel pressure if you're runnin a rubber diaphragm regulator:)bulb know a guy who swore by that stuff up until a couple summers ago, a few torched pistons changed his mind when the regulator got ate up from the stuff;)
 

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it is harsh shit.it does work as with alot of the roundy round guys used it with great success.:D
 

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79 Sanger Picklefork
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Boost

http://www.batterystuff.com/fuel-treatments/OS2q.html
This is some interesting stuff..looked into it a few years ago, never used it...raises octane rating in full points not tenths, so they say..Most boost the cans state raises by points (which in reality is tenths of a point) if I read the cans correctly...someone correct me if I'm wrong. The boost with this link says it raises your octane by full points..not tenths of point..big difference.
 

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Octane supreme

I have used the octane supreme, best octane boost I ever found. I spoke at length with one of the chemical engineers there, it was very informative. You can buy it direct here for alot less. http://www.kemcooil.com/specials.php
If you need race fuel this stuff is not economical but to get into the middle to upper 90s it is the real deal.
 

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Amber Racing Services
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I would not mix more than 25% tolulene with today's pump gas. A lot of today's pump gas already has MTBE or Ethanol in it ... check the pump stickers wherever you are buying your pump gas.

In the end, today's 110 race gas is a lot more easier to obtain and cost effective too. (about $5.75-$6.25/gal) and if you blend it 50/50, it makes your corrected cost around $4.50/gal for a 100 octane low lead.

Is it worth mixing and taking a chance of hurting something? Not IMO. You can do it
 

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Boat Nut
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If your running fiberglass tanks your going to have big problems, when they start softening up.
 

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i'm back!!
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I would not mix more than 25% tolulene with today's pump gas. A lot of today's pump gas already has MTBE or Ethanol in it ... check the pump stickers wherever you are buying your pump gas.

In the end, today's 110 race gas is a lot more easier to obtain and cost effective too. (about $5.75-$6.25/gal) and if you blend it 50/50, it makes your corrected cost around $4.50/gal for a 100 octane low lead.

Is it worth mixing and taking a chance of hurting something? Not IMO. You can do it
correct I agree...just run race gas and be done with it.....even a blend with pump works great
 

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Av-gas + Toluene

Back in the 80's, I used to split a 55 gal. drum of Toluene with Hal Reidel in Lakeport (Clearlake) for the summer. He's the guy that later bought the "Tub of Fools" boat from the late Bill Simpson. We both ran 468 blower motors. He was still ski-racing and I was just play racing every evening. We ran LL100 Av-gas from the airport + 10% Toluene + Marvel mystery additive. I cannot remember what it cost per gallon back then. I do know this fuel mixture handled 7,000 +rpm and 13# of boost with no detonation! Jocko
 

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Be careful adding these chemicals to your gasoline without proper tuning. Adding methanol or many of these other chemicals to gasoline with out changing the jetting will cause the engine to run lean. methanol has about half the heat value per unit mass as does gasoline. that means that if you run 10% methanol, you will be running about 5% lean. 20% is 10% lean 100% is 50% lean.

Earle
 

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Be careful adding these chemicals to your gasoline without proper tuning. Adding methanol or many of these other chemicals to gasoline with out changing the jetting will cause the engine to run lean. methanol has about half the heat value per unit mass as does gasoline. that means that if you run 10% methanol, you will be running about 5% lean. 20% is 10% lean 100% is 50% lean.

Earle
if you run methanol with pump gas you are going to need a catalist to mix it or it will seperate in the tank
 

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I had a recent E-mail about adding acetone to modify the octane, anyone else hear of this?
i have heard of running acetone in fuels in australia but i dont know what the mix is but for all the stuffing around with this stuff why not just run metanol and be done with it
 
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