I have just purchased a new Burgman and want to use synthetic oil to get longer engine life, cooler running, and better milage. I don't want to switch too early, however, as I want the engine to get worn in before I make the switch. Should I do it after the initial 600 mile breakin period or use motorcycle performance oil for the first oil change and then switch at 4,000 miles? Also is there a source of oil filters at less than the $11 they charge at the Suzuki dealer? I plan to do my own oil changes as I did when I owned my Honda Helix.