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im lead to beleive tenagah sell it..

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Steve,

I'd say go and get a total tune geared for the toluene, and consistantly run the same mixture if thats the case. If you have an ecu with provision for two maps then it's much easier I guess. Otherwise if it's a PFC then go into the Settings and tune using the adjustment so the entire map for ingnition and then fuel. It's less accurate but easy to remember and change on the fly afterwards.

The best thing to do is to pre-mix the toluene in a larger sealed container (fuel can) with fuel before adding it to the tank. Investing in a good system to pump it into the tank is a good idea as well as the funnels tend to be messy.

Edited by rev210

Josh, the rule of thumb that I use is 5% for every 1 RON, so 96 ron to 98 would be 10% - this is slightly overestimating, but would see you right AFAIK

Keefy, Tolulene is a aromatic hydrocarbon. It has several uses, including a cleaning solvent, paint stripper, making explosives and fuel additive to raise its resistance to knock.

It is, afaik, used by some fuel manufacturers for exactly that purpose, and it works quite well. I beleive F1 used to use high percentages of tolulene in their cars many years back.

I have found its a handy additive if you intend giving your car an unusually hard thrash, or even driving in the country where there is no 98 ron available (long interstate trips) just to keep knock under control. If you retune your car (as Rev210 suggests) you will get even better results as you can increase timing - because of the greater resistance to knock.

It will be very handy should I run out of 98 ron due to these bloody bp shenanigans :(

Never heard of that one. Octane boosters will often contain tolulene to boost the octane. Remember and octane booster will raise the octane by 4 points, which would take 96 ron to 96.4 ron - doesnt really help if you are chasing 98 ron.

Tolulene is added to petrol by the manufacturers to boost its octane rating (resistance to knock) - it will clean your fuel system, but it wont foul it. I have never had a problem, most I have used is 4L with round 30L in the tank - so approx 13%.

Rev210, how much have you used before?

Octane boosters usually double up injector cleaners, for the better ones. Maybe if u buy the cheap ass ones it will for all u know, but if u were to buy the better ones, it's good.

AFAIK, there are different specifications for octane boosters.

http://www.nitrous.com.au/products.html << this is one such example, which i've heard from workshops is effective. But to what extent, i don't really know. Anyone know if it works?

I've used this stuff for years.

Toluene is not used in modern off the shelf octane boosters and is used far less these days in basic fuels. There is a push to reduce the aromatic content of fuels such that BP98 doesn't contain very much by way of it at all, pick up a brouchure and it says the % from memory only about 7%?. Why you ask? because it's pollution and bad smell all the way ;) oh and catylitic converters don't like it.

up to 35-40% aromatic content in your fuel is fine if you tune for it.

the F1 turbo cars ran 79psi of boost and made 1,000hp and the base fuel was pure toluene with n-heptane thrown in to actually reduce the octane number to comply with regs, developed for the Honda turbo's at the time (alan prosts favorite from memory) the term 'rocket fuel' was coined at this time.

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