Also, using a higher octane number petrol such as 93 or 97 octane will not have any ill effects on the engine. In fact, using a higher octane petrol could improve the engine performance in certain situations.
Another advantage is that if they are adulterated, the lower octane number is likely to be high enough for the engine to run normally.
Generally, higher the compression ratio of a petrol engine, higher the octane number required.
The only disadvantage of high octane number is the high price!





. So better change the chain and both sprockets.. me changed at 8k. changed to R15 sprockets and FZ chain....

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