What are the differences between 92, 95, and 98 gasoline?

[Ramona]

Here are the specific differences between 92, 95, and 98 gasoline: 1. Octane rating: 92 gasoline contains 92% isooctane and 8% n-heptane; 95 gasoline contains 95% isooctane and 5% n-heptane. 98 gasoline is a mixture of 98% isooctane and 2% n-heptane. 2. Anti-knock combustion capability: The gasoline grade represents the fuel's anti-knock performance. The higher the grade, the better the anti-knock performance. 92 gasoline has poor anti-knock combustion capability; 95 gasoline has average anti-knock combustion capability; 98 gasoline has higher anti-knock performance and power.