Bruce, does your in-line oiler have a bottom drain valve?
Does the red receptacle fit under that oiler in any convenient way?
Perhaps it is for draining the oiler of condensed steam and residual oil without messing up the interior of that most beautiful steam Launch?
Perhaps also, you'd better name that beauty Ang !?!?
Super score there Bruce ... she's a thing of beauty for certain and for sure ... more than a little envious here!!!