Is there 93-octane gasoline?

[MacMax]

There is 93-octane gasoline, which is equivalent to the current 92-octane gasoline. The 92-octane gasoline meets the China V standard, comparable to the previous 93-octane under the China IV standard. Standard gasoline is composed of isooctane and n-heptane. The gasoline octane number indicates the value of the octane rating. For example, 92-octane gasoline means it has the same anti-knock properties as a standard gasoline containing 92% isooctane and 8% n-heptane. The choice of gasoline grade should match the vehicle's engine, particularly the engine's compression ratio. Higher compression ratios require gasoline with higher octane numbers. It is not advisable to use a lower-octane gasoline in a high-compression engine, as this can lead to abnormal combustion, fuel wastage, and damage to the vehicle's performance.