Here are the general capacities:
- 8.8-inch Rear Differential (Non-Limited Slip): Approximately 2.3 quarts (2.2 liters) or drain & fill 1.67 liters
- 8.8-inch Rear Differential (Limited Slip): Approximately 3.0 quarts (2.8 liters) or drain & fill 2.4 liters
Note: These values are approximate and may vary slightly, so it's recommended to consult your vehicle's owner's manual or repair documentation for the exact gear oil capacity and specifications for your specific Ford Explorer model and year.