Patent ID: 8123942

Claim:
A liquid filter assembly comprising: a first liquid filter element adapted to filter particles larger than a first size; a second different liquid filter element adapted to filter particles larger than a second size, the second size being smaller than the first size, where the second liquid filter element comprises a general disk shaped member; a housing having the first and second liquid filter elements therein, the liquid filter assembly forming a first liquid flow path having the first liquid filter element therein, and a second liquid flow path having the second liquid filter element therein, wherein the first and second flow paths are at least partially separate such that liquid flowing through the first liquid filter element does not filter through the second filter element and liquid flowing through the second filter element does not filter through the first filter element, wherein the first liquid filter element forms a mixing chamber for mixing the liquid filtered by the first liquid filter element and the liquid filtered by the second liquid filter element; and a relief valve configured to allow liquid to bypass the second liquid flow path to mix with liquid filtered by the first liquid filter element in the mixing chamber.