Should the Suzuki UU125 use 92 or 95 octane gasoline?

[SanSavannah]

UY125 has a compression ratio of 10.3:1 and a relatively low engine speed, so it should use 95 octane gasoline. Reference for gasoline grade selection: The main difference between different grades of gasoline lies in their anti-knock performance, which is an important indicator for evaluating fuel quality. Typically, this is directly related to the octane rating of the gasoline. Higher-grade gasoline offers better anti-knock performance during combustion, reducing engine vibration. The primary reference for determining which gasoline grade to use is the engine's compression ratio. Generally, engines with a compression ratio exceeding 10.1:1 should use 95 octane gasoline. Precautions for refueling: Do not arbitrarily switch gasoline grades. If a lower grade is used, it may cause premature combustion, leading to engine knocking. Additionally, incomplete combustion can result in increased carbon deposits, which may clog ducts and injectors, leading to reduced vehicle power and increased fuel consumption.