Econoline E550 V10-6.8L VIN S (2003)
Power Steering Pump: Capacity Specifications
Minimum capacity ....................................................................................................................................................................... 5.3 liters/minute (1.4 gpm)
(1) Fluid @ 74° - 80°C (165° - 175°F), Engine at idle, Pressure at 5,171 kPa (750 psi).