Here are some additional tips for choosing the right oil for your 1985 Honda Shadow:
* Use only oils that are specifically formulated for motorcycles.
* Change the oil regularly according to the manufacturer's recommendations.
* Check the oil level frequently and add oil as needed.
* Avoid using oils that contain additives, as these can damage the engine.
By following these tips, you can help to keep your 1985 Honda Shadow running smoothly for many years to come.