Quote Originally Posted by waldnerdoe View Post
These filters were designed to be installed horizontally on the 4jk1-tc engine... try to look at the first gen isuzu mux 2.5
That's the engine where the filter is installed from underneath the car right? In that case with the oil filter mounted so low the adbv should be making very little difference.
The oil filter is already near or at the lowest part of that section of the car and there's nowhere for the oil to flow downward from the filter without being pulled upward by the pump.