Octane

[ParkJosher]

I ran 93 octane, which supposedly burns cleaner than lower grade fuel anyway.

The additives supposedly keep your internals clean.
Higher octane is to prevent pre-ignition in high performance high compression engines.
You want ignition to occur only when the spark plug fires, not due to heat produced from compression.

Watch this video:

Another good topic on fuels is "summer blend" vs "winter blend"...

 

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