What is the difference between 92 and 95 gasoline for cars?

[VanBrayden]

There are mainly the following differences between 92 and 95 gasoline for cars: 1. The proportion of isooctane in 95 gasoline is slightly higher than that in 92 gasoline; however, the proportion of n-heptane in 92 gasoline is higher than that in 95 gasoline. 2. Isooctane indicates better anti-knock performance, so 92 gasoline has a much higher probability of causing knocking compared to 95 gasoline. 3. Different anti-knock properties are suitable for engines with different compression ratios. High-compression engines should use 95 gasoline; low-compression engine vehicles can use 92 gasoline.