Is it better to use 92 or 95 octane gasoline for the VV7?

[DelPaige]

The Great Wall VV7 can use 92 octane gasoline. The definition of gasoline grades and an introduction to their anti-knock properties are as follows: Definition of gasoline grades: 92 octane gasoline contains 92% isooctane, with the remainder being n-heptane. Similarly, 95 octane gasoline contains 95% isooctane. There is no difference in quality between these two types of gasoline; they are simply suitable for engines with different compression ratios. Anti-knock properties of gasoline grades: Isooctane is related to anti-knock properties, while n-heptane affects the combustion speed. 92 octane gasoline has relatively weaker anti-knock properties, whereas 95 octane gasoline has higher anti-knock properties and a slower combustion speed. Differences between 95 and 92 octane gasoline: The main difference lies in the octane rating, with no other fundamental differences. 95 octane gasoline consists of 5% n-heptane and 95% isooctane, while 92 octane gasoline consists of 8% n-heptane and 92% isooctane. 95 octane gasoline has a higher octane rating than 92 octane gasoline. In terms of stability, 95 octane gasoline burns more easily and delivers greater power output compared to 92 octane gasoline.