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AMSOIL 2-Stage Air Filter Dusts The Competition!
AMSOIL 2-Stage Air
Foam Air Filter outperforms both high quality paper filter, low
quality paper filters and oil-wetted gauze (K&N) in the SAE
J726C Test Method which tests for air flow, dirt removal and filter
Dirt is your engine's worst enemy! The only thing stopping
abrasive airborne dirt and grit from entering and seriously damaging
your engine is your air filter. But in order to do the job right,
and air filter must not only effectively stop harmful dirt, it must
do so without obstructing the vital flow of air that allows proper
combustion and maximum engine performance.
This website page describes the air filter
test equipment we have and how various types of air filter sections
perform when tested on this machine.
The air filter test machine consists of a three inch diameter clear
plastic PVC tube coupled to a vacuum motor. The top of the tube
has an aluminum mounting plate for air filter sections and the bottom
of the tube has a place to install an oiled piece of white foam
pad to prevent dirt particles from being sucked into the motor and
Note: This is not intended to be a scientific test; it is a simple
comparison test with only one variable changed from test to test
(air filter sections). The air filter test machine consists of a
three inch diameter clear plastic PVC tube coupled to a vacuum motor.
The top of the tube has an aluminum mounting plate for air filter
sections and the bottom of the tube has a place to install an oiled
piece of white foam pad to prevent dirt particles from being sucked
into the motor and destroying it.
A 5 x 5 inch. section of a freshly oiled air filter is placed on
the mounting plate and secured. The test machine is turned on and
one teaspoon of Standardized Air Filter Testing Dust is sprinkled
on the top of the filter section. The machine is then shut off and
the filter section and pvc tube is removed in order to inspect the
white oiled foam pad. In each test of a oil-wetted gauze filter
test (K&N), the oiled foam is gritty and full of test dust particles
as is the inside of the PVC tube. A paper air filter also lets the
test dirt through but varies depending on the quality of the paper
When the exact same test is replicated with a section of an AMSOIL
2-Stage Foam Air Filter using an entire bag of test dust there is
absolutely no test dust particles on the oiled foam.
If the same test is run again, only this time lightly tapping the
top of the filters, simulating vehicle impacts and vibrations, the
test dust ingress is even worse for the oil-wetted gauze (K&N)
while with the AMSOIL foam filter there is still no test dust particles
on the foam.
This test shows how oil-wetted gauze and paper air filters do not
stop dirt particles as well as an AMSOIL Two-Stage foam filter does.
Sure, they may flow air very well on a flowbench, dynomometer and
in high performance applications, but what good is all the airflow
if the filter isn't trapping and holding all the abrasive dirt particles?
Additionally, take a look at the oil used on the oil-wetted gauze
filters. It is a lightweight viscosity spray oil. Put it between
your index finger and your thumb and pull them apart and you'll
see that very little happens. In contrast, try the same thing with
AMSOIL Foam Air Filter Oil, which has a very high viscosity and
when you pull your fingers apart the oil stretches because of it's
extremely high tack properties. This is what you need on a filter
to stop dirt dead in its tracks.
Same thing goes for other manufactures of foam air filters, like
UNI, for example. They also make an excellent foam air filter and
use a very high tack oil. Fact is, there is absolutely no better
air filtration media than oiled foam. Take a look at every off-road
motorcycle that is used in extremely dusty environments. They all
have oiled foam air filters.
We have received numerous questions and concerns from K&N filter
users with the Dodge Cummins Turbodiesel and the Ford Powerstroke
Diesel asking why the air filter restriction gauge never moves when
using a K&N air filter. The answer is that the K&N has higher
airflow capability due to larger holes in the filtering media and
it apparently does not stop enough dirt particles to ever make the
filter become restricted enough to make the restriction gauge move.
Take the K&N out and put in a paper filter an eventually the
paper filter will trap enough dirt that the restriction gauge will
move. Same thing with the AMSOIL foam air filter: as it traps dirt,
eventually it will cause the gauge to move, but it will take a longer
period of time due to it's superior filtering AND airflow capabilities.
This same issue was addressed in the Q&A section of a recent
issue of the Turbo Diesel Register magazine
We have no issue with oil-wetted gauze filters other than our test
equipment indicates that these filters don't stop all the small
dirt particles. They do flow air well, but what good is all the
airflow if the filter isn't trapping and holding all the dirt particles?
So, you may then ask why do so many race cars use oil-wetted gauze
filters? Our opinion is that they are interested in airflow and
horsepower. Racing engines get disassembled, inspected and re-built
at least once a season and in many cases several times a season
therefore dirt stopping ability is not the primary concern. And,
where dirt stopping ability is a concern, such as off-road racing,
one manufacturer of oil-wetted gauze (K&N) offers a foam wrap
as described below.
An advertisement in the new products section of a performance racing
publication shows that K&N has released an open cell K&N
Airforce Precleaner for their 14 inch diameter round filters. It
is an open cell foam wrap with a special oil. The heading on their
advertisement says: "Keep 90% of the Dirt Out". We say, ok great.
Now, what about the rest of the K&N's for everyday car and truck
use? Don't they also need a foam wrap?
Our Conclusion is just as we stated previously: There is absolutely
no better filtering media than oiled foam.
The AMSOIL 2-Stage Air Filter is a maximum performance, extended
life filter that combines the very best possible filtration with
better air flow characteristics. Its two thick layers of oiled polyurethane
foam allow air to pass through virtually unrestricted, while stopping
and holding destructive dirt and grit.
The AMSOIL 2-Stage Foam Air Filter is the best form of insurance
that you can buy for your engine. Its washable and reusable design
provides many thousands of miles of trouble-free service. The AMSOIL
2-Stage Filter is designed to last indefinitely with proper service.
Under normal driving conditions, it may be used for 25,000 miles
or one year between cleaning and servicing. Under dusty driving
conditions, it should be cleaned and serviced more frequently.
How does AMSOIL , Oil-Wetted Gauze (K&N) and Paper Air Filters
Compare in Industry Standard Testing?
Here's a more detailed test procedure and conclusive results covering
AMSOIL vs. K&N and paper air filters according to the Industry
Standard Society of Automotive Engineers (SAE) test standard SAE
Your car's engine "inhales" air that is mixed with fuel for combustion.
But air contains an incredible amount of suspended dirt - typically
400 tons of it in a cubic mile. Much of this is microscopic dirt,
extremely abrasive, that can cause serious damage inside the engine.
Consequently, an air filter is a necessity. It provides the engine's
first line of defense against air-born dust.
An air cleaner must not only trap as much grit as possible, but
it should do so without "smothering" the engine, restricting its
vital airflow. Thus the most desirable performance characteristics
for an air cleaning device are high dirt-trapping efficiency, and
minimal airflow restriction as the dirt accumulates.
The Society of Automotive Engineers Test Code J726 specifies the
procedures, conditions, equipment, and report format which air filters
can be uniformly compared. A standardized dust contaminant is introduced
into a specially designed testing apparatus at a controlled rate.
Most of the dust will be trapped in the filter undergoing the test;
the remainder is captured in an "absolute filter".
The air pressure upstream and downstream of the test unit is monitored.
The test terminates when the pressure differential causes a predetermined
amount of fluid displacement on a water manometer. By quantifying
and comparing weights, pressures, and elapsed time, the experimenter
can determine a filters efficiency, capacity and airflow-based life
Our J726 trials were conducted at an independent testing facility
in the upper midwest. The tests compared Motorvator, K&N, Accel,
Fram, and AMSOIL products. The results? AMSOIL
proved vastly superior to the competitors' air cleaners as the only
air filter to consistently score high marks in all three vital areas
of airflow, efficiency and capacity.
The AMSOIL 2-Stage Air Filter traps airborne dust with 99% efficiency;
it holds an incredible 281 grams of contaminant (that's over half
a pound); and it outlasts the competition. It performs two to four
times longer than the others. That's why AMSOIL can confidently
recommend a 25,000 mile/1-year service life. And the 2-Stage is
actually re-usable, with proper cleaning and re-oiling.
How does AMSOIL do it? Two different densities of lightly oiled
polyurethane foam surrounding an expanded metal cage, precisely
assembled by careful craftsman in AMSOIL's own manufacturing plant-
is the undisputed leader in synthetics.............
Since 1972, AMSOIL Synthetics have proven to be the
BEST. AMSOIL also engineers and manufactures Super Duty Oil filters which have a
12,500 mile service life as well as specialized filtration systems for
commercial and fleet applications in cars and light, medium and heavy trucks
which can filter particles down to less than one micron ( a standard full flow
oil filter can only filter to 20-25 microns with any degree of efficiency) making oil changes virtually unnecessary and virtually eliminating engine wear.
These filters have been proven by millions of miles of over-the road trucks,
construction equipment and fleet service.
AMSOIL saves you time and money.
The only 25,000 mile/one- year and 35,000/one-
year motor oil in the world.
Exceeds the most stringent performance
specifications of all major U.S. and foreign automotive and truck
Provides up to two-times the wear protection of
other motor oils.
Increases the life of your vehicle.
Improves performance, fuel economy and
Diesel oil and filtration products designed to
deliver 1,000,000 miles for over-the-road trucks before engine overhaul.
Used by many national racing teams, fleets,
police departments, construction firms and trucking companies.
Oilsnmore.com is comprised of a group of highly skilled team of Engineers and Lubrication and
Filtration Specialists. You too, can join our group when you become an AMSOIL
Dealer and take advantage of all that we offer as you use products in your own
vehicles or begin your own AMSOIL business. You won't find a more knowledgeable
and skilled group of Dealers anywhere which is very important when you need
support as you build your business.
In addition, as a Dealer in our group you will receive exclusive unlimited
product, technical and business support from the only group of Truck and
Automotive Engineers and Lubrication Specialists on the net.
We do not only run our business on the internet. We also have numerous
commercial, industrial, trucking, excavating, construction, logging, police,
racing and many more accounts that we support and service on a regular basis. We
have several fully stocked warehouses and fully equipped shop facilities. This
provides us with excellent knowledge of the products, equipment and the business
and the ability to respond immediately to any of your needs.
We will use this
knowledge and experience to help you get started so you too can achieve your
We possess the skills, desire and knowledge to answer questions, solve problems,
improve efficiency, reduce downtime, maintenance costs and increase the
durability and life of all of your vehicles.
Read what our satisfied customers have to say about us. Read through our
website. Contact us with any questions. If you decide to become an AMSOIL Dealer
you will be joining, in our opinion, the most skilled AMSOIL group there is. We
will help you get started and provide you with the tools and information in
order to be successful in this business or with technical and product assistance
to use AMSOIL products in your own vehicles.
We offer several options to receive information on AMSOIL. We welcome the
opportunity to work with your personally as your servicing AMSOIL Dealer. Our
AMSOIL Dealer Group is led by a Truck/Automotive Engineer and Lubrication
Specialist with over 18 years experience. This exceptional benefit is
Please, email us at
we will send you an exclusive
comprehensive package of product, technical and business information.
If you are
serious about AMSOIL products and the business opportunity this is the best
option. You will receive extensive technical and business support from both
myself and my Direct Jobber, a Detroit, Michigan Truck/Automotive Engineer and
Lubrication Specialist with over 19 years experience. We look forward to helping
you learn about AMSOIL.
Or for a smaller, very general information package (which includes a catalog and
Dealer application) you can request information via any of the links below.
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For Information on Becoming an AMSOIL Dealer
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Your Businesses Equipment
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and Business Opportunity Information
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