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The Importance of Engine Filtration
 Compared
to microscopic dirt particles, your engine is a Goliath,
roaring with heat and energy as it converts fuel into
raw horsepower. But despite all this power, your engine
is extremely vulnerable to the threat of microscopic
engine dirt. In fact, if unchecked, this tiny menace
will dramatically erode your engine's performance
and can eventually cripple it beyond repair.
AMSOIL Oil Filters and Filtration
Systems are the key to preventing costly repairs caused
by engine dirt. Filtration is simply a method of removing
contaminants by trapping and holding them outside
the system of oil circulation. In order for filtration
to be truly effective, however, it must be able to
capture contaminants of all types and sizes.
AMSOIL has developed a complete
line of sophistciated filtration products designed
to offer the best protection available against virtually
all harmful engine contaminants. With an AMSOIL Super
Duty Oil Filter and the AMSOIL Dual-Gard By-Pass Oil
Filtration System, your engine can run long and hard
with outstanding protection against engine dirt.
AMSOIL SDF OIL
FILTERS
 Full-flow
filters install directly into the line of oil circulation.
The full flow of oil passes through the filter as
the oil journeys between the oil pump and engine.
A full flow filter must be capable of removing and
holding contaminants without obstructing oil flow
to the engine.
Most conventional filters
on the market use a thin layer of porous filter paper
as their filtration media, which compromises their
ability to catch fine particles. In addition,
these filters have almost no extended cleaning ability
since their media have a low capacity for storing
dirt.
Because of their limited
filtering area, most conventional paper filters display
good flow characteristics but are restricted in their
capacity and longevity. They become obstructed
relatively quickly, opening the relief valve and allowing
unfiltered oil into the engine. Their lightweight
construction also makes them susceptible to degradation.
AMSOIL SDF FILTERS
WORK BETTER - LONGER!
AMSOIL Super Duty Filters
(SDF) feature an advanced fiber media offering the
ready flow of oil hard-working engines demand with
superior capacity, efficiency and service life to
that offered by conventional paper oil filters.
In fact, SDF has over a 75 percent better combined
efficiency/capacity rating than other popular oil
filters as tested according to the Society of Automotive
Engineers industrial standards.
The AMSOIL SDF may be
used for intervals of 12,500 miles or six months (whichever
comes first).
Dual-Gard
Oil Filtration System
 AMSOIL
took the performance built into our standard big truck
By-Pass filters, and
put it into a much more convenient and versatile pacakge.
Proof From the Test Labs
Wear tests have shown particles
of contamination in the sub-20-micron range are most
harmful to rings and bearings. Most trucks are sold
with a full-flow filter as their only oil cleasnsing
unit. A study by the Milwaukee School of Engineering
determined the filtering efficiency of four top-selling
full-flow filters compared with a BE-90 AMSOIL Spin-On
Bypass Filter. The graph (below) shows the By-Pass
functioning at 97.6% efficiency in removing particles
as small as 3 microns, a feat no full-flow filter
can match.
AMSOIL Dual-Gard
- Versatility
- Convenience
- Superb Engine
- Protection and Safety
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