What fuel should I use in a CB450 / CL450 / CB500T? Common Motor December 17, 2018 05:10 Follow We recommend premium (92+ octane) fuel; if it can be found non-ethanol fuel as well. Related articles What are the carburetor stock size jets for my Honda CB450 / CL450 / CB500T? Cleaning out your Gas Tank What is the carburetor float height for my Honda CB450 / CL450 / CB500T? How often should I change my front fork oil on my CB450 / CL450 / CB500T? Engine Fires on One Cylinder...Is my Condenser Bad? Comments 0 comments Please sign in to leave a comment.