Can the Benelli BN 300 use 92 octane gasoline?
2 Answers
Benelli BN 300 requires 93 octane gasoline, and it is not recommended to use 92 octane. The type of gasoline a motorcycle should use depends on the engine's compression ratio. If the engine's compression ratio is below 9, it is recommended to use 90 octane gasoline; if the compression ratio is below 9.5, 93 octane gasoline is suggested. Using gasoline with a lower octane rating in a high-compression engine can lead to knocking during operation, potentially causing damage to the engine. Conversely, if the engine has a low compression ratio and uses gasoline with a higher octane rating, incomplete combustion may occur, leading to unnecessary waste. Higher octane gasoline has better anti-knock properties, but if the engine's compression ratio is insufficient, it can easily lead to carbon buildup during operation. Motorcycles are labeled with the recommended gasoline octane rating upon manufacture. When refueling, simply follow the recommended octane rating specified for the motorcycle.
As a frequent motorcycle rider, I think the Benelli BN 302 can run on 92 octane gasoline, but it's not recommended. The engine has a high compression ratio, and 92 octane fuel with lower anti-knock index may cause engine knocking—that metallic pinging sound inside the engine. Long-term use could damage the engine, affecting power output and fuel efficiency. It's best to follow the owner's manual, which usually recommends 95 octane or higher to prevent engine overheating. My advice is not to choose 92 octane just to save money, especially during summer rides when the risk of knocking increases in high temperatures. While 95 octane fuel is slightly more expensive, it ensures smoother performance, reduces emissions, and is more environmentally friendly. In short, safety first—don't risk damaging your bike to save small amounts.
