Rear
| TYPE & VISCOSITY To determine if a differential is a standard type or a limited-slip type, check axle code listed on label on door lock pillar. Standard Axle Codes -- consist of TWO NUMBERS Limited-Slip Axle Codes -- will consist of ONE LETTER and ONE NUMBER | Standard Ford part number F1TZ-19580-B | Synthetic 75W-140 |
| Limited Slip Ford part number F1TZ-19580-B. Add 4 oz of Additive/Friction Modifier. | Synthetic 75W-140 | |
| CAPACITY Fill no higher than 1/4 inch to 9/16 inch below fill plug. The differentials with the 8.8 inch and the 10.25 inch ring gears have a removable cover; the differential with the 9.25 inch ring gear does not. | With 8.8 & 9.75 Inch Ring Gears | 5.5 Pint (US) (pt (US)) |
| With 10.25 Inch Ring Gear | 7.5 Pint (US) (pt (US)) | |
| Friction Modifier C8AZ-19B956-A | 4 Ounce (US) (oz (US)) |