After having had 2 Harleys that I bought 2nd hand I have now bought a new Ultra. As I would like to keep her in top condition for as long as possible I would like to ask you all what sort of fuel to go for. I live in England and the choises here are 95 and 98/99 octane.(the high octane goes well over $2.03/ltr) Bikes destined for the UK, I'm sure, are modified to take this high octane as I know in the US it's much lower (isn't the max 92, sold by Shell?) but does it make sense to go for the highest rating when it comes to being better for the bike. I'm not looking for more performance, I bought the bike to relax . If I want to get somewhere fast I take a train/plane. (the high octane goes well over $2.00/ltr) Any advise would much appreciated.