Someone has to disagree, right?.

I totally agree with the no-alcohol and the good quality two-stroke oil arguements, but contrary to popular opinion, 92 octane fuel is not cleaner burning, hotter burning or more powerful. Octane levels refer to the fuel's point of spontaneous combustion. The higher the octane of a fuel, the less likely it is to ignite prematurely. This is important in engines with high compression ratios. In high compression automobiles, high octane gasoline is needed to prevent the gasoline from igniting prematurely in the combustion chamber. Your average automobile has compression ratios of 8-9 and runs just fine on 87 octane. High performance engines run compression ratios 9-10. Race cars run 10-14 and may need 100+ octane. Diesel engines need compression ratios of 20+ just to burn that dirty diesel fuel. MOST TWO-STROKE ENGINES RUN COMPRESSION RATIOS OF 6-7!!! High octane fuel won't make any difference(although the placebo effect can do wonders!) Four stroke outboards are a different story. Some of them are almost racing engines and may need high octane fuel.

Complicating matters: The octane ratings are composed of 2 components, research octane and motor octane (RXM/2) divided by 2. The research octane is the quality of the base stock, the motor octane is derived from additives. Problem is the highest octanes are achieved by motor octane additives, which may gum up the pistons in a 2 cycle engine. So some high octane fuels(from gas companies that use low quality additives) may well do more damage than good in your two-stroke.

What to do? Get out your engine manual and check its compression ratio. Unless it is over 8, don't waste your money(buy me a beer instead).