Harley-Davidson recommends the use of their own brand of motor oil, known as "Harley-Davidson Genuine Motor Oil," for their motorcycles. They specifically design this oil to meet the requirements and provide optimal performance for their engines. It is important to use the recommended oil to ensure proper lubrication, cooling, and protection of the engine.
Harley-Davidson Genuine Motor Oil is available in different viscosities, such as 20W-50, 10W-40, and others, depending on the specific model and climate conditions. It is always best to consult the owner's manual or contact a Harley-Davidson dealer to determine the recommended oil type and viscosity for your particular motorcycle.
While it's generally recommended to use Harley-Davidson's own motor oil, there are also other reputable brands available in the market that meet the required specifications for Harley-Davidson motorcycles. If you choose to use an alternative brand, ensure that it meets the appropriate viscosity, API (American Petroleum Institute) specifications, and any other requirements specified by Harley-Davidson for your motorcycle model.