I have a 2000 883 harley sportster what is the best gas to run in this bike.?

I have been running 93 octane is this ok and is this sea foam stuff I have been hearing about worth the money

It states in the OWNERS MANUAL to run a minimum of 91

HERE IS SOME INFO ON OCTANE………
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TRUE octane booster is no longer available….thanks to the EPA. If it is, I haven’t seen it in over 15 years, I would not know where to find it.
There are, however other boosters on the market that “increase your octane”. To use it, just following the mixing instructions on the container.
Octane controls the compressability of gas.
The higher the compression ratio of an engine is, the higher it’s fuel’s octane rating must be. Let’s say an engine with 8.5:1 compression requires an octane rating of 89, if you run 87, it may pre-ignite causing pinging. You can run 92 octane with no harm at all, but it would be a waste of money, because the compression is low enough to run on 89. If you have an engine with 10.5:1 compression, you need a minimum octane of 92, anything lower would cause it to pre-ignite and ping.
If you are experiencing pinging running the vehicle manufacturers specified octane rating, you most likely have an intake and/or exhaust leaking, incorrectly jetted carb or incorrect fuel injection settings incorrect ignition timing.
A very common misconception that can be proven on the dyno, is people running aviation fuel in their cars for the added octane, this is actually detremental to your engine, there are additives in av-gas that can corrode an automotive fuel system and the viscosity of av-gas is different than that of auto fuel…it is designed for higher altitudes.
Another misconception is people running high octane racing fuel in their normal cars, they THINK it’s the octane that SLIGHTLY helps their performance…it’s not, it other additives in the gas that provide at quicker, hotter, more powerful burn, causing higher combustion pressure than standard gasoline, but this can also damage a normal engine due to the extreme heat racing fuel creates.

Rating gasoline

Gasoline is primarily a mixture of two volatile liquids, heptane and isooctane. Pure heptane, a lighter fuel, burns so quickly that it produces a great amount of knocking in an engine. Pure isooctane evaporates slowly and produces virtually no knocking. The ratio of heptane to isooctane is measured by the octane rating. The greater the percentage of isooctane, the less knocking and the higher the octane rating. For example, an octane rating of 87 is comparable to a mixture of 87% isooctane and 13% heptane.

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