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Fw: K&N filter test -construction equipment

I'll back you up on this one.

Took the MFS off a few weeks back just to check it out. Guess what?
Everything covered in a fine dust. So I cleaned it off. Next I take the air
filter out. Guess what? K&N. Guess where I live? CO.
-----Original Message-----

>Martin, you have done the Quattro List a great service by posting the note
>about re-useable filters in dusty conditions.
>The note you posted was originally posted in a Prodigy forum for
>automobiles, which I stumbled on a few years ago.  Remarkably, many of the
>forum participants still thought both the K&N and the popular filter system
>used in the test: AMZOIL ,still worked.
>My experiences with K&N filters comes from the motorcycle business where
>most of the racers we sold them to let the filters get so dirty they
>worked.  We never saw any dust in the carbs or intakes from racing.
>So I thought installing one on my Audi 200 tqw would be all that it was
>advertised.  Added a little filter oil to the factory prepared element for
>good measure.
>After a year of driving around Colorado's dry and often very dusty roads, I
>took the K&N off to clean it.  Also took off the entire air box which you
>need to do.  Guess what.  The air tube  where the hot wire sensor is
>located was coated in fine dust.  That filter no longer is part of my
>garage and car parts inventory.  Went to the local autoparts store and
>found a FRAM direct replacement made in Italy which had a huge amount of
>pleats in the paper, much more area than the stocker.  It's been in place
>now for another year and a half, same dusty conditions.  Last fall an
>examination of the intake tract showed NO DUST at all.
>Confirmation of your posted article test findings.
>Folks that live in damp, strictly highway settings won't have the dust
>problem.  But those of you using re-useable filter elements in dusty
>conditions found in the West will regret having all that dust ingested in a
>fine engine.