5.0L V8: Approximately 14 quarts (13.2 liters) including the heater core.
5.8L V8: Approximately 15.5 quarts (14.7 liters) including the heater core.
7.5L V8: Approximately 18 quarts (17 liters) including the heater core.
It is always best to refer to the owner's manual or a reliable source of information to confirm the exact coolant capacity for your specific 1993 Ford V8 engine.