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Old 24 June 2008, 09:50   #11
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The more I look into this the more I realise Toluene is one of the best kept secrets around.

Normal unleaded has about 12% toluene - super unleaded is about 16% - as super unleaded is at least 10p per litre more expensive why not just add the toluene???

In Australia petrol stations were adding up tp 50% to make more money. Of course using it in a car would be illegal in the UK.............
Around here North East USA, Toulene is a little harder to come by than Xylene so we use that instead. But in any case, it works fantastically.

I actually run a 25% mix for two tank fill ups, in anything I buy used that has a motor. Cars, motorcycles, lawnmowers, what ever. The Xylene breaks down deposits and eliminates varnish in carburetors as well. Nice stuff.
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Old 24 June 2008, 11:26   #12
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My only worry is that I have fibreglass tanks - is it likely to be a problem??? I suppose as long as I don't put too much in as it's in the fuel anyway!!!
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Old 24 June 2008, 11:37   #13
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So it is cheaper, you can add it in in large quantities without harming an engine?

Where do you get it then!?
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Old 24 June 2008, 12:23   #14
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Chemical supply firms. It should be legal if it's only used in a boat. Minimum order is probably a 205 litre drum though!!!
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Old 24 June 2008, 13:49   #15
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Chemical supply firms. It should be legal if it's only used in a boat. Minimum order is probably a 205 litre drum though!!!
You can buy it in much smaller quantities - but probably not at the price you quoted.

I thought you had (in theory at least) to pay fuel duty on any product you intended to burn in your engine e.g. I was told 2-stroke oil has fuel duty on it but 4-stroke doesn't.
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Old 24 June 2008, 14:06   #16
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My only worry is that I have fibreglass tanks - is it likely to be a problem??? I suppose as long as I don't put too much in as it's in the fuel anyway!!!
I've no experience with fiberglass, but the stuff is friendly with the plastic used in fuel cells for drag cars, and friendly with the plastic my fuel jugs are made of.

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So it is cheaper, you can add it in in large quantities without harming an engine?

Where do you get it then!?
I've run as high as 1/3 Xylene with no ill effects on the motor. At that quantity I was able to run 30psi of boot in my Grand National I took a pass down the 1/4 mile strip with a passenger and his response was "That was FOOKING scary!!!"

We can get it here at hardware stores in the paint section. Both Toluene and Xylene are used as paint thinners and are available in 1 gallon and 5 gallon cans.
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Old 24 June 2008, 14:21   #17
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You can buy it in much smaller quantities - but probably not at the price you quoted.

I thought you had (in theory at least) to pay fuel duty on any product you intended to burn in your engine e.g. I was told 2-stroke oil has fuel duty on it but 4-stroke doesn't.
I am not really sure - it is not classified as a fuel and the duty is only payable on certain types of fuel.

I only intend to use it as a booster if I get a 300 or 350 outboard that needs super unleaded. It would be much cheaper to turn 95 into 99 than to buy the 99 octane stuff.
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Old 24 June 2008, 14:32   #18
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Arent these hydrocarbons more prone to give a lot of sooty deposits after being burnt .. particularly Toluene ?
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Old 24 June 2008, 14:47   #19
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Arent these hydrocarbons more prone to give a lot of sooty deposits after being burnt .. particularly Toluene ?
Well they seem to manage in Super unleaded and we don't have cats to worry about!!!
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Old 03 July 2008, 08:35   #20
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Yes without mods to the engine it's pointless BUT many new outboards need high octane fuel.
To my knowledge every outboard sold in the UK does not need high octane fuel, they will all run on standard unleaded - unless you know better?
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When a boat looks that good who needs tubes!!!
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