all the additives do essentially the same thing, but vary in quantity required due to different energy contents - toluene is likely the cheapest route though - the amount of prepackaged booster you need to add is a lot more than you think, and gets pretty pricey
race shops generally carry 100 octane in 5 gallon jugs - a real pain though to drag that thing around though - some have pumps - if you really want to run it, you can get a 55gallon drum and keep it in your garage and have it delivered to you, and use a rabbit pump to pump it into your car (unless you're in oregon)
as a daily driver, i would not worry about maintaining 93 - 91 will give you almost all of your power, especially with a chip (at least the one i am running) - i bump the octane when i am going on a run, but for normal driving, or when i am just doing highway driving, i run 91
i've never run these chemicals into my fuel on a car this new with fuel injections and such - it was no problem on my older carburetted stuff though - i played with acetone, toluene, alcohol, 104 plus, and even jack daniels (college experiment - very bad) - there is a formula for each one (we drank more of the jack than the car got)
as for preference in brands, that is pretty subjective - a lot of people prefer chevron because of the techron in it - i generally run 76 because that is where i get the 100 octane and don't want to go to 2 different stations
94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating
www.968forums.com
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