Motorcycle Maintenance and Oil Information for 2004 BSA Gold 500
For the 2004 BSA Gold 500, the product catalog provides a starting point when choosing a lubricant. Before servicing the engine, verify the complete manufacturer specification and the procedure used to check the final oil level.
What kind of oil does a 2004 BSA Gold 500 take?
The listed engine-oil viscosity for this application is 10W-40. Products shown for this application include 10W-40 Synthetic Metric Motorcycle Oil. Viscosity alone does not establish full compatibility; verify the manufacturer’s oil standard.

