Mixing 92 gasoline and 95 gasoline occasionally is not a problem, but long-term mixing is not recommended. Differences between 92 gasoline and 95 gasoline: The octane ratings of the fuels are different, and different octane ratings correspond to different anti-knock indices. In other words, higher-grade gasoline has better fuel anti-knock performance. Effects of long-term gasoline mixing: Long-term mixing of different grades of gasoline will affect the service life of the car's ignition system, fuel injectors, and spark plugs, advancing the vehicle's major repair time. Strictly speaking, 92 gasoline and 95 gasoline should not be mixed. However, since their chemical compositions and other aspects are relatively similar, and they have strong anti-knock properties, mixing them generally does not cause significant issues. After short-term mixing of different grades of gasoline, special maintenance for the vehicle is usually not required. However, it is recommended that car owners use the corresponding grade of gasoline as required by the vehicle itself when conditions permit. For example, a car originally using 92 gasoline will generally not have problems if 95 gasoline is used, but the reverse may cause vehicle damage. Using lower-grade gasoline can cause vehicle vibration, and in severe cases, lead to issues such as bent valves and damaged valve cover gaskets.
