What is 92 gasoline?

[DelXavier]

92 gasoline refers to fuel with an octane rating of 92 and a heptane content of 8, which is suitable for mid-range vehicles (those with relatively low compression ratios). On December 18, 2013, the General Administration of Quality Supervision, Inspection and Quarantine of China and the Standardization Administration of China jointly issued the fifth-stage national standard for automotive gasoline—"Automotive Gasoline" (GB17930—2013, replacing GB17930—2011). The difference between 92 gasoline and 95 gasoline: First, it can be clearly stated that there is no difference in fuel quality between 92 gasoline and 95 gasoline. 92 gasoline consists of 92% isooctane and 8% heptane, while 95 gasoline consists of 95% isooctane and 5% heptane. The reason 95 gasoline is slightly more expensive is due to its higher proportion of isooctane. Isooctane also has another function—anti-knock performance, meaning the higher the proportion of isooctane, the better the anti-knock performance. Every engine undergoes a comprehensive evaluation before leaving the factory, and based on the engine's performance and other data characteristics, anti-knock requirements are specified, which determines the appropriate gasoline grade to use.