Should the Civic use 92 or 95 octane gasoline?

[DeCarter]

When refueling a Honda Civic, it is recommended to use unleaded regular gasoline with an octane rating of at least 92. Below are the differences between 92 and 95 octane gasoline: 1. Heptane content: 95 octane gasoline contains 5% heptane, while 92 octane gasoline contains 8% heptane. 2. Isooctane content: 95 octane gasoline contains 95% isooctane, whereas 92 octane gasoline contains 92% isooctane. 3. Anti-knock properties: Different octane ratings indicate different anti-knock properties of the fuel. The higher the octane rating, the better the anti-knock performance. 95 octane gasoline has better anti-knock properties compared to 92 octane gasoline.