2009 Kawasaki Vulcan 2000 Classic LT Owners Manual - Page 37
2009 Kawasaki Vulcan 2000 Classic LT Manual
Page 37 highlights
GENERAL INFORMATION 35 NOTICE California models only: Never fill the tank so the fuel level rises into the filler neck. If the tank is overfilled, heat may cause the fuel to expand and flow into the Evaporative Emission Control System resulting in hard staring and engine hesitation and incompliance with the emission regulation. Fuel Requirement: Fuel Type Use clean, fresh unleaded gasoline with a minimum Antiknock Index of 90. The Antiknock Index is posted on service station pumps. The octane rating of a gasoline is a measure of its resistance to detonation or "knocking." The Antiknock Index is an average of the Research Octane Number (RON) and the Motor Octane Number (MON) as shown in the table. Octane Rating Method Antiknock Index (RON + MON) 2 Minimum Rating 90 NOTICE Use minimum of 90 octane gasoline only to prevent severe engine damage.