Laundry machine including agitator and lid for softener fluid

A top-load laundry machine appliance, comprising:

• a tub and a wash basket rotatably provided within the tub;
• an agitator disposed in the wash basket to impart an oscillatory motion in the wash basket, the agitator comprising a vertically extending shaft and an oscillatory member extending from the shaft;
• a cup comprising an upper lip, wherein the cup is attached to a base positioned at the shaft of the agitator;
• a cap positioned atop the shaft of the agitator, the cap comprising an outer cylindrical wall and a trough wall extending radially inward from the outer cylindrical wall and sloped vertically downward toward the cup, the trough wall comprising a radially inward end positioned vertically upward of the upper lip of the cup, wherein a clearance gap is formed between the upper lip and the inward end of the trough wall;
• and
• a lid selectively attachable to the cap at the trough wall, the lid comprising a cylindrical wall extending vertically when attached to the cap, the lid comprising a sloped wall corresponding to the trough wall.