AMSOIL has updated their oil recommendation bulletin for all for all Harley-Davidson models dating from 1929 to present. This bulletin includes a cross reference of Harley Davidson lubricants, a product recommendation chart for each engine-type and a service interval chart for each product relating to their application. Recommendations for engine, transmission, primary chaincase and fork oil are included. See AMSOIL Recommendations for All Harley-Davidson Models. AMSOIL also offers oil, filters, spark plugs and much more for Harley-Davidson units. See the complete AMSOIL Motorcycle Line.