Is the Impact Significant When Mixing 95 and 92 Gasoline?

[DelCassidy]

It is not recommended to add 92 gasoline to a car that uses 95 gasoline. The actual difference between 92 and 95 gasoline lies in the different proportions of isooctane and n-heptane. 92 gasoline contains 92% isooctane and 8% n-heptane, while 95 gasoline contains 95% isooctane and 5% n-heptane. The proportion of isooctane affects the anti-knock performance of gasoline with different octane ratings—the higher the isooctane content, the better the anti-knock performance. The reasons why 95 and 92 gasoline should not be mixed are as follows: Choose the gasoline grade according to the requirements in the car's user manual: Do not blindly use higher or lower octane gasoline than recommended, as this can lead to increased carbon deposits. It is best to follow the manufacturer's recommended gasoline grade. Do not mix different types of gasoline: When using gasoline, mixing different types is prohibited. Do not mix kerosene or diesel into gasoline, as this can intensify knocking, severely impair the engine's lubrication effectiveness, and shorten the engine's lifespan.