hmm, or you can , errrr, uh hem, get real lead from certain catalogs............ in California its only for boating use of course. i have never used it for that of course, because i dont own a boat........ i would name the place, but i dunno. well, lets call them A. Krafters no no no, too obvious how about Auto K.?? its not cheap but i dont know if it works. i never found a benefit from using octane boosters though, just made my wallet a little lighter. esp the NOS brand ones, like $8 a bottle or so. for that price, i can get a couple of gallons of 100 octane around here and make my own gas.on the plus side, i used that RESTORE stuff before. ( silver an, all blue crap in there ) i liked it. the engine did run smoother, and a little cooler to. my milage sucks anyway i stopped tracking it. i got too depressed when i saw it.