It appears that 87 octane is the most popular : r/wellworn 85 to 88 octane regular unleaded gasoline – explained! 85 vs. 87 octane – anne's travels
Can I run my 93 octane tune on 87 octane fuel? – GenSport United
What's the difference between gas types
Unleaded 88 vs 87: what's the difference?
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87 octane vs 92 octane
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How to get 93 octane with 91 and e85?
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