Honda NSS300A Owner's Manual page 19

Refuelling and Fuel Guidelines
Follow these guidelines to protect the engine,
fuel system and catalytic converter:
Use only unleaded petrol.
●
Use recommended octane number. Using
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lower octane petrol will result in decreased
engine performance.
Do not use fuels containing a high
●
concentration of alcohol.
Do not use stale or contaminated petrol or
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an oil/petrol mixture.
Avoid getting dirt or water in the fuel tank.
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P. 143
2
Riding Precautions
Continued
15