1,Connect the filter and blue and red hoses and quick connectors. 2,Connect the high and low pressure quick connectors to the high and low pressure fluorine filling ports on the vehicle respectively. 3,Close the blue low pressure quick connector and open the red high pressure quick connector. At this time, the refrigerant oil in the low pressure direction go to the high pressure direction and enter the container. 4,When the refrigerant oil enters the glass bottle and reaches a certain capacity, close the high pressure valve. At this time, you can take out the refrigerant oil and add refrigerant oil. 5,Open the high and low pressure valve switches to allow the refrigerant oil to enter the pipeline for circulation. Color: As Shown Material: Alloy Package Contents: 1*Conditioning Compressor Oil Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.