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For Cars, Light Trucks, and
Heavy Duty Trucks
Oil filters are expected to perform a variety of tasks. First, they must
have the ability to flow an adequate volume of oil, while keeping restriction
to a minimum. Second, in order to provide adequate service life, they
must possess adequate particle storing capacity. Third, they must be
efficient enough to remove contaminants of a given size range.
Flow
Oil is the life blood of an engine, and its constant flow is essential
for proper lubrication of engine components and the prevention of
friction, heat and wear. Engine components rely on the oil circulation
system to deliver a steady and adequate supply of motor oil, and
it is up to the oil filter to ensure fast and efficient flow through
its media.
Efficiency
The removal of particles and contaminants from the oil stream is essential
in keeping wear to a minimum. The smaller the size of the openings
in the filtration media, the more efficient the filter in removing
contaminants. However, the smaller the size of the openings, the
more difficult it is for oil to flow through. This is known as the
flow/efficiency compromise. High-quality filters must strike a good
balance between flow and efficiency.
Filtration efficiency can be measured through SAE test method HS
806B. Measuring the ability of a filter to remove a known contaminant
from the oil stream, results are reported as the percent of contaminant
removed over a period of time.
The graph below shows the time-weighted efficiency of nine flow-flow
oil filters using SAE test method HS 806B. All filters are of the same
size and are recommended for the same application. Test results indicate
that the AMSOIL SDF-15 offers up to 36 percent greater filtration efficiency
than competing oil filters.
Capacity
As filters continually remove contaminants from the oil stream, they
eventually become obstructed, compromising flow and shortening the
life of the filter. SAE test method HS 806B also measures an oil
filter’s capacity by noting the amount of contaminant it takes
to increase resistance across the filtration media by a given degree.
The graph below shows the filtration capacity of the same nine full-flow
oil filters using SAE test method HS 806B. Test results indicate that
the AMSOIL SDF-15 offers a contaminant holding capacity up to 185 percent
greater than competing oil filters.
AMSOIL Super Duty Oil Filters
Most conventional oil and air filters make use of paper as the filtration
media. While displaying good flow characteristics, these conventional
filters are limited in their ability to catch and store particles,
become obstructed quickly and require frequent replacement.
AMSOIL Super Duty Oil Filters (SDF) are composed of a special cellulose,
synthetic and glass blend media, providing a ready flow of oil to engine
components, superior contaminant-removing efficiency and extended service
life. AMSIL SDF Oil Filters may be used for intervals of 12,500 miles
or six months (whichever comes first).
The filters rugged construction plays an important role, too. For
example, the Super Duty's steel coil spring, which centers the filter
element inside the filter housing, springs back to its original shape
after the filter's been subjected to shock loads. That helps the filter
maintain its seal so oil flows through the media, not around it. Similarly,
the Super Duty's fluted-rib spiral center tube stands up to pressures
that may collapse the one-piece rolled tubes used in conventional oil
filters. A collapsed center tube allows virtually all the oil to by-pass
the filter media and circulate unfiltered.
Who Needs the Super Duty?
The AMSOIL Super Duty Oil Filter's rugged construction and high-tech
media make it ideal for motorists who extend their oil drain intervals,
drive hard, want to make their engines last or, bottom line, want
the best filter available.
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The Big Picture
When you look at the big picture, the overall superiority
of the AMSOIL SDF Oil Filter makes a big difference.
Oil filters need good efficiency and good capacity
to protect engines. Those with poor efficiency fail
to trap a significant portion of particles large enough
to damage the engine. Those with poor capacity fill
quickly, and once filled allow dirty oil to bypass
the filtration media, circulate unfiltered and damage
the engine. Capacity becomes an especially critical
issue with extended oil drain.
The AMSOIL Super Duty Oil Filter offers superior
efficiency and capacity to those offered by other popular
filters. While some other filters offer good efficiency,
they do not offer nearly the capacity of the AMSOIL
SDF. For those who wish to extend their oil drain intervals
-- or even for those who simply go too long on an oil
change -- the extra safety offered by the AMSOIL SDF
Oil Filter makes a big difference. |
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| Efficiency -- A filter's ability
to trap contaminants. |
Capacity -- The amount of contaminants
a filter media can hold without loss of oil flow and
filtration. |
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PRODUCT DESCRIPTION
The AMSOIL Super Duty Oil Filter (SDF) is designed to provide
maximum filtration while meeting the high flow demands
of modern automobiles. The AMSOIL SDF contains a special
cellulose, synthetic and glass blend media that offers
the best possible balance of long life, high capacity
and overall efficiency.
Traps Dirt Throughout Media Thickness
The AMSOIL SDF has a lofted fiber depth-type media that
traps dirt throughout its entire thickness for exceptional
filtering efficiency. It keeps oil clean and free of
wear-causing contaminants. The AMSOIL SDF Oil Filter
provides up to 100 percent more capacity and up to
20 percent greater efficiency than other filters provide.
It is ideal for use with extended oil drain intervals.
Built for Rugged Performance
The AMSOIL SDF has a heavy-duty case of drawn steel.
The case is double-crimped at the base with rolled-under
seaming to withstand extreme pressure surges and road
shocks.
Assures Oil Flow with Relief Valve
On most filters a relief valve is provided to assure
ample oil flow. It prevents oil starvation in the engine
in the event the media becomes saturated.
Prevents Oil Drainage During Engine Shutdown
On filter installations where the mounting is sideways
or upright, dirty oil could drain out of the filter
when the engine is shut off. The AMSOIL SDF has an
anti-drainback valve that keeps trapped contaminants
in the filter when the engine is not running.
APPLICATION
AMSOIL INC. recommends changing the AMSOIL SDF according
to the following guidelines.
In petrol-fueled engines using any AMSOIL motor oil
except AMSOIL XL-7500 Synthetic Motor Oil, change the
filter at 12,500-mile or six-month intervals. In petrol-fueled
engines using AMSOIL XL-7500 Synthetic Motor Oil, change
the filter at 7,500-mile or six-month intervals. If a
Hastings or other filter is used, filter should be changed
at manufacturer recommendations.
In diesel-fueled large truck engines, change the filter(s)
at the engine manufacturer's recommended oil change interval.
In diesel-fueled light trucks, including pickups and
vans, change the filter at 7,000-mile or six-month intervals.
When using an AMSOIL Oil Filter with conventional motor
oils, refer to the owner's manual for the recommended
oil filter change interval. |
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