Polaris 2003 Victory Classic Cruiser - Manual (Page 174)

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SPECIFICATIONS
Fuel Specifications
Use only unleaded gasoline, 92 pump octane minimum.
DO NOT USE GASOLINE CONTAINING METHANOL.
Using gasoline/methanol blends can result in poor starting and driveability, and may damage critical fuel system
components.
Gasoline containing up to 15% Methyl Tertiary Butyl Ether (MTBE) can be used.
Gasoline containing up to 10% Ethanol can be used.
Gasoline that has been Reformulated or Oxygenated can be used.