How to Add Refrigeration Oil to a Car Air Conditioner?

[LorenzoFitz]

Steps to add refrigeration oil to a car air conditioner: 1. Open the car hood and locate the high and low pressure pipes of the air conditioner, with the larger one being the low pressure pipe and the smaller one the high pressure pipe; 2. Check if the charging valve is qualified, and avoid using inferior quality charging valves; 3. Connect the high and low pressure pipes of the air conditioner to the red and blue pipes on the air conditioner pressure gauge device, and connect the yellow pipe on the device to the vacuum machine for vacuuming; 4. Turn off the vacuum machine and remove the high pressure pipe; 5. Shake the bottle up and down before use to ensure the contents are uniform, and add an appropriate amount of refrigeration oil from the compressor service port as needed. Too much refrigeration oil can lead to poor cooling, while too little can damage the compressor, so it is essential to add the specified amount for the vehicle.