The Filter Minder® monitoring device
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 filter maintenance 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.