How much oil to fill a differential?

The amount of oil needed to fill a differential varies depending on the vehicle make and model. Typically, it can range from 1 to 2 quarts for standard differentials, while larger or more complex differentials may require up to 3-4 quarts. It's essential to consult the owner's manual or manufacturer specifications for the exact capacity for your specific differential. Additionally, always check the fluid level after filling to ensure it reaches the proper level.