What brake fluid should I use in my CB550K / CB550F / CB500K? December 17, 2018 05:58 DOT 3 brake fluid. Related articles How to set the ignition timing on the Honda CB500K / CB550 Honda CB500 and CB550 4-Cylinder Factory Service Manuals How often do I need to replace the ignition points on my CB550K / CB550F / CB500K? How to change the oil and oil filter on the Honda CB500K and CB550 Check our general maintenance section for more topics!