Re: What fuel octane should I run?
Octane is one of the most misunderstood things on the planet, everyone thinks because high performance cars use high ocatane it must be better gas and give more power, can't tell you how many times I have seen Junior at the racing gas pump with moms Buick thinking that it is going to magically make the car more powerful.
The higher the octane rating the slower the gas burns which is why high octane is used in racing engines, the high compression causes detonation so those engines need a fuel that burns slower.
Old 2 strokes are low compression engines and don't need anything more than regular unleaded.
Now the more expensive fuels have additional addatives that may clean out the engine and make it run better because there is less carbon or the jets are cleaner but it has nothing to do with the gas itself.
87 burns more readily than 91 so your engine should run better on the lower octane since it is easier to ignite.
