The Luber Finer is a very heavy filter with silicone adbv and they claim full synthetic. The base is very thick don't know what the story is why. There is a mark right across the base plate like something dragged across it. Doesn't have any noticeable depth so should be OK.
The Baldwin B37 is to show the small opening for the ADBV and the thread is not square to the baseplate. The valve opens only about one mm. I figured it roughly though to equal the inlet holes area.
The Delco seems to be a good basic filter made by Champ but supposedly with patented Delco media.
All have louvers and more or less OK, not great. I am not liking louvers so much, too much bother to be looking at them and I don't know about those ragged louver edges either. Give me the regular holes any day.
Luber PH477:
Baldwin B37:
Delco PF1233:
Not very good pictures but it takes time.
The Baldwin B37 is to show the small opening for the ADBV and the thread is not square to the baseplate. The valve opens only about one mm. I figured it roughly though to equal the inlet holes area.
The Delco seems to be a good basic filter made by Champ but supposedly with patented Delco media.
All have louvers and more or less OK, not great. I am not liking louvers so much, too much bother to be looking at them and I don't know about those ragged louver edges either. Give me the regular holes any day.
Luber PH477:
Baldwin B37:
Delco PF1233:
Not very good pictures but it takes time.