Abstract: An apparatus for delivering a lubricating oil into a lower unit housing through a hole in the housing, the apparatus comprising an oil container having a neck portion and a main body. The main body defined by a main body wall for containing the lubricating oil. The main body wall being sufficiently thick to withstand pressure of up to 30 pounds per square inch. A pumping mechanism is attached to the oil container, the pumping mechanism comprising a pumping component comprising a plunger housing and an air moving plunger movable within the plunger housing, and an outer sleeve positioned within the container. The plunger housing is positioned within the outer sleeve, the plunger housing having an air valve disposed at a distal end thereof for expelling air into the outer sleeve, the air being moved by the plunger.