Cooling System Bleeding: Notes
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Mitsubishi Outlander, 2003 Mitsubishi Montero Sport, 2003 Mitsubishi Montero, 2003 Mitsubishi Lancer, and 2003 Mitsubishi Galant. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
DO NOT remove radiator cap when radiator is hot. Removing cap immediately lowers boiling point of coolant and could cause a violent overflow, resulting in large coolant loss and personal injury.