Where I am overhere in Aus, the cost of the premium is that much more that the extra efficiency doesn't make it cost effective.
Both my 1150GS and 1100S have learnt to run on standard / normal / regular (s'pose like two 2* back in the day).
Years ago, I used to use Shell fuel, because the shopping dockets gave it discount.
On a hot day, accelerating hard, there would be popping and pinging and such.
As I talked about it with others and researched, I learnt more about it and then stopped using it - prefing to use BP fuel instead.
Was at Uluru (Ayres Rock) and got talking with an 1100GS rider who acutally worked at the refinary where the Shell petrol was made.
He said that Shell petrol was not good for air cooled engines and he didnt use shell fuel either.
My GS and S are the older ones with no knock sensors - maybe that would have made a difference.
Both my 1150GS and 1100S have learnt to run on standard / normal / regular (s'pose like two 2* back in the day).
Years ago, I used to use Shell fuel, because the shopping dockets gave it discount.
On a hot day, accelerating hard, there would be popping and pinging and such.
As I talked about it with others and researched, I learnt more about it and then stopped using it - prefing to use BP fuel instead.
Was at Uluru (Ayres Rock) and got talking with an 1100GS rider who acutally worked at the refinary where the Shell petrol was made.
He said that Shell petrol was not good for air cooled engines and he didnt use shell fuel either.
My GS and S are the older ones with no knock sensors - maybe that would have made a difference.