I have just blown a fork seal on 2011 Fat Bob, what is the best oil to put in when the seal is replaced?

Hey mate dont much about the difference between brands but I would definately stick with the same viscosity that the OEM recommend. I knew of an old eskimo that had blown a seal---cheers Grim

Since it's under warranty ask for the screaming eagle heavy. That's around 12 to 15 weight it will feel harsh at first but after a few hundred K you will love the more nimble ride.