tdragger
Living Legend
We don't have much of a choice here in the US. Everything is mixed at 10% ethanol and the corn lobby is spending a fortune to bump it to 15%.
I'll put this out there, since the octance number measurements vary across the world, let's not use the numbers. 91 RON is not the same as 91 (R+M)/2.
Most everywhere uses terms such as Regular, Mid-Grade and Premium. If we use those terms then we can talk the same language.
You are best running Regular or possibly Mid-Grade. Premium should be a no-no. It is a long standing cycling myth that you should run Premium.
I'll put this out there, since the octance number measurements vary across the world, let's not use the numbers. 91 RON is not the same as 91 (R+M)/2.
Most everywhere uses terms such as Regular, Mid-Grade and Premium. If we use those terms then we can talk the same language.
You are best running Regular or possibly Mid-Grade. Premium should be a no-no. It is a long standing cycling myth that you should run Premium.