Yeah - the concentration of actual octane enhancing products in those boosters are minimal. When they say 2-3 POINTS - they mean 93 to 93.2, not 95. Those boosters work better with the lowest grade fuel as there is a greater differential.

For everyones info - I found the e-mail from the bulk chemical supply house for the Xylene or Toluene. They wanted $102.40 CDN for a 20 Litre can. So, that's about $85 bucks US for 5.3 gallons for my friends south.

I couldn't find pure Toluene / Xylene in hardware stores like everyone said you could (perhaps it is easier to find in the US). I CAN tell you that up here, most places are not just going to give you this stuff after a credit card #....this is used to make explosives.

So, perhaps in the US you can find it cheaper / more readily available. But, I can tell you that the price for that is WAY more expensive then buying / mixing with race gas.