Okay, i ride (or will be soon as my licence get's back from the DMV [had to snail mail it in]) a ZX-6R, and in the manual it says to use the 92 octane i think (at work right now). Basicly says to use the high grade stuff, my question is, even though the manual says "it's bad because of engine knock" and "if you don't use this, your engine WILL BLOW UP AND KILL YOU AND YOUR LOVED ONES", will it really do these things? Should i start to take out a better insurance policy on my loved ones? ...also what about an additive? Like those octane boosters you see in your local Checker Auto-Parts or Wal-Mart (damn i hate that place)? They say the can up the octane by 6 or somthing, so that means if i use the basic fuel, 87 octane i think, and add that, it would put me at 93, above the recomended, if the recomended is in fact 92...