Can a car that uses 92 octane gasoline use 95 octane gasoline?

[DelJude]

A car that uses 92 octane gasoline can use 95 octane gasoline, but it is not recommended. In unavoidable situations, using 95 octane gasoline once or twice is not a big issue. However, if this practice is continued long-term, it can not only damage the engine's spark plugs and other ignition systems but also affect the engine's lifespan. The difference between 92 and 95 octane gasoline lies in the ratio of n-heptane and isooctane. 92 octane gasoline contains 92% isooctane and 8% n-heptane, while 95 octane gasoline contains 95% isooctane and 5% n-heptane. The higher the proportion of isooctane, the better the anti-knock performance. Generally, it is recommended that car owners follow the suggested octane number indicated inside the fuel tank cap when refueling and avoid arbitrarily changing the type of gasoline to prevent damage to the vehicle.