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How much oil do you put in a new ac compressor on 2003 grand caravan?

You should not add oil to a new AC compressor for a 2003 Grand Caravan (or any other vehicle). New AC compressors come pre-filled with the correct amount of oil. Adding more oil can damage the compressor.

The amount of oil is specific to the compressor model and the system's total refrigerant charge. Adding oil yourself without the proper knowledge is highly discouraged.

If you're replacing the AC compressor, take it to a qualified technician. They will properly evacuate the system, install the new compressor, and charge the system with the correct amount of refrigerant and oil. Improperly charging the system can lead to compressor failure and other damage to the air conditioning system.