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Singles / Re: Most suitable petrol for an M21?
« on: 20 April, 2022, 18:15:06 »Hi,
Try a tank of super E10 and see if you notice a difference.
Dave.
Not wishiung to be rude, but there is no such fuel.
The super/premium/synergy/whatever else the company may choose to call it fuels are not E10. They are higher octane fuels with a MAX ethanol content of 5%. In much of the country they are 0% ethanol, but still designated E5.
I would advise the OP to disregard octane content (it is irrelevant for 'our' bikes) and read the threads regarding ethanol.