In Isuzu truck to replace new ac compressor how much oil should be added?

When replacing the AC compressor in an Isuzu truck, the amount of oil to add typically ranges from 4 to 8 ounces, depending on the specific model and system design. It's essential to refer to the vehicle's service manual for the exact specifications, as different models may require different amounts. Additionally, ensure that the oil is compatible with the refrigerant being used. Always check for any oil that may have been retained in the old compressor and adjust the amount accordingly.