Allegro Bus Fan Gear Box Replacement on Powerglide Chassis

Degreased it and drained and refilled with the 24 oz required. Mine was overfilled as it had a full quart in it. Mine does not have that little dip stick. I was told by the manufacturer, Curtis, that the gearbox was propriatary to them and not the same as the Freightliner unit and Tiffin and the manual said to fill with 24 oz