K&N Strikes Again!!!!

[JimTJr]

I feel that for oiled filter performance, there is a trade off of filtration vs. flow. Even K&N shows the
low/variable numbers.. K&N Air Filter Efficiency Testing Even a well maintained
oiled filter will most of the time be less efficient at filtering than paper according to K&N

Leave the oiled filters to the racers..

[NCHornet]

Ehe AIS/Zoodad flows all the air my truck needs. My silicon levesl are at 2 this proves the AIS is a excellent filter.

NCH

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Last edited by NCHornet : 09-07-2008 at 04:59 AM.

[gtspowerstroke]

Originally Posted by JimTJr

I feel that for oiled filter performance, there is a trade off of filtration vs. flow. Even K&N shows the
low/variable numbers.. K&N Air Filter Efficiency Testing Even a well maintained
oiled filter will most of the time be less efficient at filtering than paper according to K&N

Leave the oiled filters to the racers..

For starters where does the link you posted say anything about paper filters vs oiled filters?

Secondly you are basing your entire opinion of oiled filters off K&N filters. There are MANY different types and manufacturers of oiled filters that build much better filtering filters than K&N.

Foam filters are oiled filters and are a MUCH better filter than a paper filter. This is because the oil grabs and holds the dust. Even particles that are smaller than the pores in the filter because the particles can't make the corners along the passageway that the air does. So it runs into the oiled foam and sticks.

Foam filters are very different from the very thin gause filters like K&N that don't have enough depth to trap the dirt.

This is also why you don't see paper filters in hgh dust applications such as motorcycles and ATVs. They just flat don't filter as well. You do find them a lot in low dust conditions such as automobiles where they drive mostly on paved streets and aren't driving in a thick cloud of dust being kicked up from the car in front of them.

[powersmokes85]

im using an afe pro dry. had it for 70k. just beat it out and wash it with every other oil change, no more oil!!

[White Buffalo]

Originally Posted by JimTJr

Well, you won't hurt many peoples feelings bashing K&N for our motors. ESPECIALLY the drop in filters. (Like your running?) They have been notorious for not sealing well around the edge of the box,,

I agree with you 100% about the K&N air filter on the 7.3L. I've seen too many oil analysis results on 7.3L's using K&N filters showing high silicon numbers. On a UOA anything under 20 ppm is considered normal. The 6637, Ford AIS and AFE all keep it in the single digits (5-7 ppm) on 5,000 mile intervals. I've seen some UOA reports showing way over 20 using the K&N, it just allows to many dust particles to pass through. If your on the highway alot and have it sealed correctly then you might be OK, but in any type of dusty or farm/construction environment you are on your own. K&N worked fine on my Harley but oil analysis doesn't lie so it's not going on my truck either. Why take the chance of dusting your engine?

Edit - NCHornet - nice silicon results on your UOA, 2 is awesome!

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Last edited by White Buffalo : 09-06-2008 at 07:11 PM.

[gtspowerstroke]

Originally Posted by White Buffalo

The 6637, Ford AIS and AFE all keep it in the single digits (5-7 ppm) on 5,000 mile intervals.

My point exactly. The AFE filters ARE oiled filters. Again you CAN NOT lump all oiled filters into the same catagory as K&N filters and you CAN NOT use K&N filters as the only guide for oiled filters.