Genuine Harley-Davidson 360 Motorcycle Oil. SAE50 - 1 Quart (0.946L). Harley-Davidson Genuine H-D 360 Motorcycle Oil is developed and tested for use in Harley-Davidson motorcycles. Harley Davidsons unique additive package helps prevent engine wear and helps keep your engine cooler cleaner free of sludge varnish and corrosion. Harley-Davidson V-Twin motorcycles operate at higher temperatures than water-cooled automobiles thus a specific high temperature additive package is necessary to protect the engine. Consult your owners manual for your specific oil requirements.