How many quartz of gear oil do i need for a 1991 Chevy g20 van 5.7l?

For a 1991 Chevy G20 van with a 5.7L engine, you'll typically need about 4 to 5 quarts of gear oil for the differential, depending on the specific model and drivetrain configuration. It's always a good idea to consult the owner’s manual or check the manufacturer’s specifications for the exact capacity. Additionally, ensure to use the appropriate type of gear oil recommended for your vehicle.