Quality and Performance can not be evaluated easily.
Novice users tend to select oil filters by price
Since oil filters have insidious yet crucial effects on engine performance and integrity.
Filter material is an composite of paper pulp,
other fibers and resins, which are processed to produce extra thickness and density to provide High Filtration Yield.
Filter material is fluted to it's maximum or
to the O.E required numbers; the higher the number of fluting, the higher the filtration efficiency.
Prefix of Product: SF example: SF-4005