Bonneville America Forums Forums Technical Forums General Tech Octane: High Grade or the lower?

The owners manual says 89 octane, but I usually use regular unleaded. My bike runs great on regular unleaded.

You have to remember that our ignition system is electronically controlled, and becasue of this the bike will adjust the timing depending on the type of fuel that you use.

The higher octane gas doesn't mean it is better just that it has a higher octane rating. I have know several people that have operated gas stations. Based on what they have told me, the only gas that you are guaranteed to get at its advertised rating is regular. Plus and Primium gases can be anything between regular octane up to the advertised octane rating. It all depends on how much profit they want to make, or how much gas and what type the delivery truck is carrying.

Tom