To find the correct capacity:
1. Locate the axle code: Look for a sticker or tag on the differential housing. It will have codes that indicate the ratio (e.g., 3.55, 3.73, 4.10).
2. Consult your owner's manual: The owner's manual should have a chart correlating axle ratio to differential fluid capacity.
3. Check a Ford parts website or a reputable online automotive parts store: Enter your vehicle's year, make, model, and axle ratio to find the correct fluid capacity.
Without knowing your axle ratio, I cannot give you a precise oil capacity.