There is no good reason to use Leaded fuel in a two cycle. There are several folks who use the 100LL in their outboards with success, but as for the need, it really isn't there. The lead additive leads to heavy deposits in the exhaust system and also on the spark plugs. There is also an environmental component to not using leaded fuel in anything that does not need it. The best choice is to use a good Top Tier ethanol free fuel. You may only be able to access premium in the ethanol free formula. This the only option available in many areas, but it is definitely worth the effort having ethanol free in your two cycle motors. This is one of those topics like oil fuel ration that garners lots of opinions. YRMV (Your results may vary!)..