How Much Refrigerant Oil Should Be Added to a Car's Air Conditioning System?

[LillianaFitz]

Approximately 30ml to 70ml of refrigerant oil should be added to a car's air conditioning system. The correct method for adding refrigerant oil is as follows: 1. Open the car's engine hood and locate the high and low pressure pipes of the air conditioning system. The larger one is the low pressure pipe, and the smaller one is the high pressure pipe. 2. Check whether the charging valve is qualified. The use of inferior charging valves is prohibited. 3. Connect the high and low pressure pipes of the air conditioning system to the red and blue pipes on the air conditioning pressure gauge device. Then, 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 evenly mixed. Add an appropriate amount of refrigerant oil from the compressor service port as needed.