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Taken directly from their site:
14. Should I rotate my filter to get more longevity?
This is actually recommended. Most vehicles have a particular area to draw air in from based
on the filter surroundings and rotating the filter will keep it clean longer.
15. How do I know when to clean the air filter?
How often you need to clean your filter will depend on the air and road conditions in your
area. Most filters require cleaning before the dirt build up gets as thick as the wire mesh.
The usual interval is 30,000 - 40,000 miles depending on driving conditions. We recommend
that you check your filter about once a year in normal usage and once every six months
if you are located in a dirty environment. If you are running with a cold air intake we
recommend checking the filter every 10,000 Ð 15,000. Using a Hydro-Shield will reduce
service intervals.
16. Can I use cleaning agents other than the Injen cleaner and oil?
We highly recommend that you only use Injen Technology oil and cleaner. Injen Technology
air filter is a specific mineral oil blended with special polymers to form a very efficient tack
barrier. Standard petroleum products such as transmission fluid and motor oil will soften
and destroy the filter bonding agents and sealed edges. Injen cleaner is a non-detergent
degreaser. Solvents, gasoline and various house hold chemicals will harden the rubber
seals causing the filter to distort and may affect the ability of cotton fibers to function properly.
A mild detergent can be used in an emergency situation, but care should be taken to fully
rinse and remove the soap. Removing soap from the filter can be extremely difficult or time
consuming. Always ensure the filter is completely dry before re-oiling.
17. Can I use an air compressor to dry the filter faster?
No, this can blow holes directly through the filter material and ruin the filter. Choose a warm
sunny day if possible to clean the filter and let it dry naturally.
18. Should I hit the filter on the ground or use a brush against the screen to
remove larger particles of debris?
No, this could damage the filter base or top and tear holes in the cotton gauze.
(see filter cleaning instructions provided with every kit or cleaning instructions on this web site).
19. How much oil should I use to re-oil my filter after it is cleaned?
Surgical cotton air filters are extremely absorbent and will not require significant amounts of oil.
Keep in mind very little oil goes a long way. Using a small bead of oil, run the bead up and
down the filter pleat allowing time for the filter to absorb the oil and act as a wick. If after 10-15
minutes the filter has areas that look gray, add a small amount of oil in the gray or un-oiled area
only. Never over oil an air filter.
And you will need to remove the bumper for the filter or remove your front left wheel and go from the fender well.
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