Who makes harley Davison SYN 3 oil?

Harley-Davidson SYN3 oil is manufactured by Harley-Davidson itself. It is a premium synthetic motor oil specifically designed for use in Harley-Davidson motorcycles, offering enhanced performance and protection for the engine, transmission, and primary chaincase. This oil is formulated to meet the unique demands of Harley-Davidson engines and is part of their official line of maintenance products.