This unit comes with a full 8 ounce charge of premium PAG 46 oil.

 

 

 

This unit comes with a switch port plug in the rear.  The original pressure switch and the switch port plug must be removed from each compressor.  Using a set of small internal snap ring pliers, remove the snap ring from each port.  Carefully twist the original switch, gently wiggling back and forth, and slide in from the cavity.  Spraying some lubricant around the switch may facilitate removal.  Two flat head screwdrivers can be used to pop the plug from the new unit.  Wipe the switch clean, and slide it into the new unit.  Replace the snap ring, bevelled side up, to secure the switch in place.