There's only one bleeder but here is the exact filling procedure to make sure you're doing it proper.
STANDARD PROCEDURE - COOLING SYSTEM FILLING WARNING: MAKE SURE ENGINE COOLING SYSTEM IS COOL BEFORE REMOVING PRESSURE CAP OR ANY HOSE. SEVERE PERSONAL INJURY MAY RESULT FROM ESCAPING HOT COOLANT. THE COOLING SYSTEM IS PRESSURIZED WHEN HOT. CAUTION: Do not use well water, or suspect water supply in cooling system. Use only a 50/50 mixture of the specified ethylene glycol type antifreeze/coolant and distilled water.