A liquid filter assembly comprising: (a) a housing arrangement including a wall defining a housing interior, an inlet, and an outlet; (b) a porous support member in the housing interior; the support member having an interior volume; (c) a filter element in the interior volume of the support member; the filter element including a media pack defining a media interior; the media pack being secured to a closed end cap and an open end cap including a radial groove; (i) the filter element being arranged relative to the housing arrangement to receive unfiltered liquid from the housing inlet, into the media interior and then allow the unfiltered liquid to flow through the media pack and then through the support member to a filtered liquid volume outside of the interior volume of the support member, and then through the housing outlet; characterized by (d) a bypass valve arrangement to permit at least some unfiltered liquid to bypass the media pack and flow into the filtered liquid volume; the bypass valve arrangement including a valve head and a valve seat being secured to the housing arrangement; the valve seat being in removable sealing engagement with the valve head, and when the valve head is moved out of sealing engagement with the valve seat, a bypass opening allows flow of unfiltered liquid into the filtered liquid volume and when the valve head is in sealing engagement with the valve seat, the bypass opening is closed, preventing unfiltered liquid from bypassing the media pack; (e) a dynamic seal being configured to engage a sealing surface of the valve head and repeatedly change position as it slides along and against said sealing surface and as the valve head moves into and out of sealing engagement with the valve seat; (f) the dynamic seal including a seal member held by the filter element and (g) the seal member comprising an o-ring seal member held by the radial groove of the open end cap and dynamically sealed against the sealing surface of the valve head. (a) a housing arrangement including a wall defining a housing interior, an inlet, and an outlet; (b) a porous support member in the housing interior; the support member having an interior volume; (c) a filter element in the interior volume of the support member; the filter element including a media pack defining a media interior; the media pack being secured to a closed end cap and an open end cap including a radial groove; (i) the filter element being arranged relative to the housing arrangement to receive unfiltered liquid from the housing inlet, into the media interior and then allow the unfiltered liquid to flow through the media pack and then through the support member to a filtered liquid volume outside of the interior volume of the support member, and then through the housing outlet; characterized by (i) the filter element being arranged relative to the housing arrangement to receive unfiltered liquid from the housing inlet, into the media interior and then allow the unfiltered liquid to flow through the media pack and then through the support member to a filtered liquid volume outside of the interior volume of the support member, and then through the housing outlet; (d) a bypass valve arrangement to permit at least some unfiltered liquid to bypass the media pack and flow into the filtered liquid volume; the bypass valve arrangement including a valve head and a valve seat being secured to the housing arrangement; the valve seat being in removable sealing engagement with the valve head, and when the valve head is moved out of sealing engagement with the valve seat, a bypass opening allows flow of unfiltered liquid into the filtered liquid volume and when the valve head is in sealing engagement with the valve seat, the bypass opening is closed, preventing unfiltered liquid from bypassing the media pack; (e) a dynamic seal being configured to engage a sealing surface of the valve head and repeatedly change position as it slides along and against said sealing surface and as the valve head moves into and out of sealing engagement with the valve seat; (f) the dynamic seal including a seal member held by the filter element and (g) the seal member comprising an o-ring seal member held by the radial groove of the open end cap and dynamically sealed against the sealing surface of the valve head.