The recommended frequency for changing the engine oil in a Royal Enfield Classic or any motorcycle may vary depending on factors such as the model, year of manufacture, riding conditions, and the specific oil being used.
This is a common interval for many motorcycles, but it's essential to refer to the owner's manual or contact an authorized Royal Enfield service center for the most accurate and up-to-date information regarding your specific model.
Please note that manufacturers may update their recommendations over time, so it's always best to consult the owner's manual or reach out to a Royal Enfield dealership or service center for the most reliable guidance on oil change intervals for your particular motorcycle.