A method of supplying an additive in an oil filter, the method including:
forming a dispersement device housing with a first chamber and a second
chamber, the second chamber being sealed from the first chamber by a pair
of dividing walls; sealing a first metering opening with an oil soluble
material the first metering opening being in fluid communication with the
first chamber when the oil soluble material is removed from the first
metering opening; sealing a second metering opening with an oil soluble
material the second metering opening being in fluid communication with
the second chamber when the oil soluble material is removed from the
second metering opening; disposing a first liquid additive within the
first chamber; disposing a second liquid additive within the second
chamber; sealing the dispersement device housing with a cap, the cap
being configured to seal the first chamber and the second chamber within
the dispersement device housing; and securing the dispersement device
housing to a filter element of the filter, the filter element and the
dispersement device defining an outlet fluid opening, such that fluid
flowing into and out of the filter must pass through the filter element
and into the outlet fluid opening and the cap is located between the
filter element and the dispersement device housing.