1150GSA Fuel 93 or 95 unleaded?

[quicksilver]

Fellow dogs,

Is there a difference in filling up with 93 or 95 unleaded on the older 1150GSA or GS boxer engines?
what would the preferred octane type be?

Thanks

 

[Brandt]

 

[quicksilver]

 

[Stofdonkie]

 

[Welsh]

 

[DirtRebell]

 

[Welsh]

 

[DirtRebell]

 

[Stofdonkie]

 

[Welsh]