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: