Filter Minder ® Graduated Air Filter Indicator - Grommet Mount - Model No. G33501-01120
For Gasoline Vehicle
Myth vs. Fact
The Filter Minder ® Graduated Air Filter Indicator makes it easy for you to tell when it's time to change filters.
The myth is that an automotive air filter should be changed about every 6,000 miles, or when it "looks dirty." The fact is, a certain amount of dirt in an air filter actually increases its filtering efficiency by reducing the size of the holes in the filter media which helps stop smaller dirt particles. This means that instead of a maximum life of 6,000 miles, the typical air filter may actually last anywhere from 60,000 to 100,000 miles! Filters do not plug based on time or mileage. They plug based on the operating environment of the vehicle.
The Filter Minder ® takes the guesswork out of when to change your air filter because it doesn't care how dirty the air filter looks or how long it's been installed. It only cares how well the filter is working. When the filter gets restricted, the Filter Minder ® will let you know.
Air Filter Service Indicator
Filter Minder ® is installed on the air cleaner or air induction piping so
that it has access to clean filtered air (between air filter and engine).
air filter service indicator is a simple device that accurately measures the air
induction system filter restriction. It measures and remembers the highest restriction
at maximum air flow, which is called full load condition. This condition occurs
during hard acceleration, or while pulling a trailer, etc.
indicator is easy to read. As the air filter plugs, and restriction increases,
the yellow position indicator moves in the clear window and locks at several points.
When it reaches and locks in the red zone, the air filter should be changed and
the indicator reset to zero. Reset the indicator by pushing the yellow reset at
the end of the indicator.
type of air filter service indicator is the Filter Minder ® Single Position
Service Indicator. The clear window turns red when maximum recommended restriction
has been reached.
air induction filter system has a clean filter or initial restriction reading.
Depending on air flow volume, filter media, and air filter size, there may not
be enough restriction to show a reading on the gauge with a new filter, or the
position indicator may move one or two positions. Do not be alarmed if there is
some restriction with a new filter as this is not unusual.
filters usually show low restriction through most of their service life. As the
air filter nears the end of available service life, filter restriction will increase
more rapidly, and the yellow position indicator on the Filter Minder ® will
move more rapidly towards the red zone. High humidity or rainy conditions may
slightly increase air filter restriction.
Filter Minder ® is calibrated in inches of water vacuum per the engine manufacturer's
Use of the Filter Minder ® helps maximize filter service life, prevents excess fuel usage from overly restricted filters, and saves on operational costs.
How Filters Work
An air filter is made from paper or other media to trap dirt and other foreign particles as dirty air passes through the filter. There are tiny holes in the media that allow the air to pass through, and stop most particles.
When To Reset The Filter Minder
The Filter Minder ® should be reset whenever the service indicator is checked to determine air filter restriction or when a new air filter is installed. Push the reset button at the end of the service indicator, and the position indicator will return to zero.
Filter and HVAC Service Indicators and Gauges:
there is no position indicator showing in the clear window:
Filter Switch Service Indicators:
Filter Minder ® is a durable product that may last the lifetime of the vehicle.
Filter Minder ® air filter service indicator measures vacuum in the air induction
system in 'inches of water vacuum'.
the Filter Minder ®
Air Filter Restriction Readings
Frequently Asked Questions
Should an air filter be changed frequently?
What if the Filter Minder ® position indicator does not move for a long period
3. Why doesn't
the Filter Minder ® show restriction even though the air filter looks dirty
enough to change?
How long does an air filter last?
Does horsepower decrease as air filter restriction increases?
Does fuel consumption increase as air filter restriction increases?
BACK TO BASE VEHICLE
U.S. Post Office On Wheels Technical Information Base Vehicle Air Filter Indicator
Clegg Industries, Inc., a manufacturer of specialty vehicles, trailers and special structures for defense and industry
16400 Northwest Zac Lentz Parkway . Victoria, TX 77905 . (361) 578-0291 . FAX (361) 578-5908
Copyright © 2006 Clegg Industries, Inc.
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