A fuel level indicator system includes a housing member that is couplable to a fuel tank. The housing member is positionable adjacent to a vent opening in the fuel tank. The housing member defines an interior space. The housing member has a lower aperture facilitating environmental communication between the interior space and an interior of the fuel tank. The housing member has an upper aperture. A vent portion is coupled to the housing. The vent portion is in environmental communication with the interior space of the housing member via the upper aperture. The vent portion facilitates air flow from the interior of the fuel tank through the housing and out of the system. A whistle assembly is positioned substantially within the housing. The whistle assembly produces an aural indication of airflow through the housing member.