1978 Honda cb550 four motor oil what do I use?

SAE 20W-50 motor oil is recommended for the 1978 Honda CB550 Four. This oil is a multi-grade oil that provides good protection for the engine in both cold and hot weather conditions. It is also important to use an oil that is specifically designed for motorcycles, as these oils contain additives that help to protect the clutch and transmission.

Here are some additional tips for choosing the right motor oil for your 1978 Honda CB550 Four:

* Always check the owner's manual for the recommended oil type and specifications.

* Use a high-quality oil that is specifically designed for motorcycles.

* Change the oil regularly according to the manufacturer's recommendations.

* If you are riding in extreme weather conditions, you may want to consider using a different oil weight. For example, if you are riding in very cold weather, you may want to use a lighter weight oil, such as SAE 10W-40.

By following these tips, you can help to protect the engine of your 1978 Honda CB550 Four and keep it running smoothly for many years to come.