Rotate the inside cylinder clockwise to the top

Unscrew the cover on the top of the smaller cylinder

Pour the liquid (Refrigeration Oil / Fluorescent Dye / Leak Detection Dye) into the cylinder

Tighten the cover

If the cylinder is not full filled with oil, then discharge the air is needed. (Rotate the bigger cylinder counterclockwise until the oil flows out at the end of the hose.)

Turn on the car air conditioner to the maximum air volume

Attach the low pressure quick connector to the cylinder

Locate the low pressure filler port of the car air conditioner and connect the other end of the quick connector.

Rotate the cylinder counterclockwise to inject the oil into the air conditioning system

Thread Size: 1/4" SAE

Material: aluminum alloy cylinder, rubber tube, pure copper connector

Hose pressure: 600-3000PSI

Capacity: 60ml / 2 oz

1X Oil Injector cylinder

1X R134a quick coupler low side

1X R1234yf quick coupler low side

1X O ring

1X Operating Manual