How much oil does a harley road king take?

A Harley-Davidson Road King typically requires about 4 quarts (approximately 3.8 liters) of engine oil when performing an oil change with a filter replacement. If you're just changing the oil without replacing the filter, it may take around 3.5 quarts (approximately 3.3 liters). It's always best to consult the owner's manual for the specific model year for the most accurate information.