Amsoil is now offering a a bike rally t-shirt, showing all of the bike shows that Amsoil sponsors. Including Sturgis, Daytona, and Loconia. These may only be available for a limited time. If you want one get one now. Buy Amsoil Bike Rally T-Shirt
While you are there you may be interested in the report "A Study of Motorcycle Oils" This report goes in to great details about motorcycle lubrication, while comparing 32 leading motorcycle oils in a head to head comparison. Most likely the oil that you use now is in this report. You owe it to yourself and your bike to read and/or watch this!