K&N Air Filters? - Page 3 - Fiberglass RV

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Old 03-19-2007, 06:48 PM   #29
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Donna D.'s Avatar
Name: Donna D
Trailer: Escape 5.0 TA, 2014
Posts: 23,916
I was under the impression that the dirtier they got the better they filtered.

If so, why bother to clean them?

Better yet, why purchase a new one for $40 when you could likely get an old one that filters better than a new one for less than $5 at a junk yard?


P.S. Flame suit already on!
I'm not about to flame you Loren, and neither is anyone else

But you made a good point. Wrecking yards are a great place to get stuff...everything from the filters you mentioned (although trust me, wrecking yards know the value!), to wheels, to hitches, I'm a firm believer in recyling AND saving money.

Donna D.
Ten Forward - 2014 Escape 5.0 TA
Double Yolk - 1988 16' Scamp Deluxe
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Old 03-19-2007, 07:59 PM   #30
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Name: Roger
Trailer: Y2K6 Born Free 32RQ on the Kodiak chassis, 1995 Coachmen 19' B-van and 1996 Precision 21' Sailboat
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Loren, I was going to flame you, but I seem to have misplaced my flamethrower tonight... Those aren't unreasonable questions at all. The problem is that the dirtier the filter gets, the more it restricts airflow. Unrestricted airflow was the reason you buy the thing to begin with and why it has whatever benefits it's alleged to have.

Eventually though, the oil just kind of dries up and it doesn't filter nearly as well as with the tiny amount of oil on the filter medium. I think the filter on my Excursion uses some huge amount of oil like 1.8oz per cleaning.


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