haha, i knew that i spelled it wrong when i posted, but since no one corrected me yet, didn't bother bringing it up. well, thanx for the info. i've only used xylol in the paint and body,m but heard about using it as fuel, and wanted to know more, because availibility of fuels and oils is an issue where i ride. there's usually only auto parts, and hardware stores near where i ride. nothing to do with performance needs. i know beter than to use conventional octane boosters, but i want to just bump the timing, and fix my silencers, so i can get a little more power to last 'till the fall when i'll do a 4 mill, or pv/both. guess i'll just look into 100LL.