Actually all the oil from the pump has to go somewhere be it with no filter, partial flow, or full flow filter. It's like turning a garden hose on a roof and saying less comes out of the hose if there are gutters. We won't let one of our engines go out the door without a full flow filter and a pcv valve. Oil will still be clear at 3000 miles rather than black at 1000. Fram filter in photo came with kit but it had a WIX when finished

[img]https://s31.postimg.cc/3t40a15ef/Billy_s_donated_55_016.jpg[/img]


Evan