Air Filters
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Junior User
Joined: Feb 2011
Posts: 55
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From: Algiers, Louisiana
Air Filters
I have duty tonight because of the tropical storm and I was bored sitting at home watching the wind blow, so I went to Auto Zone and bought an air filter for my 09 F-150. I wanted to compare the Fram to the K&N I have in the truck. The filter was $19.99 plus tax. I measured the filter and calculated that the Fram has about 2913 sq. inches of filter media. The K&N has 72 sq. inches. The K&N was $32 new, plus the cleaning and oiling kit. I guess maybe the oil makes up for the difference in sq. area, but not 40.5 times the difference. I've also heard that you'll get better gas mileage with a paper filter as opposed to the oiled one, but only a little.
I put the Fram filter in to see if it makes any difference. I'll let ya'll know.
I put the Fram filter in to see if it makes any difference. I'll let ya'll know.
Elder User
Joined: Jul 2010
Posts: 501
Likes: 1
From: Pacific NW
Really, the FRAM will have a finer filter media than you typically get with a K&N. The only time a K&N approaches the filtering capabilities of a paper media filter is when they are chalked full of dust/dirt. This creates a finer mesh and helps filter things out. This is why K&N literature notes that just because the filter looks dirty, it isn't time to clean yet. They encourage you to leave a layer of dust on your filter. You may also see a difference, depending where you are in the country. You should look at your intake piping and give it a good wipe-down with a clean paper towel. Take note of how much dust you see in the intake. Then after you've had the FRAM for a while, see if you notice a difference. I did in my 98 Dodge neon I owned as a kid. I never bought K&N after that car.
Super Moderator
Joined: Aug 2003
Posts: 25,479
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From: Isanti, MN
Is the K&N filter not pleated? I've never seen one like that.
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,594
Likes: 144
From: SE Georgia
K&N is a gimmick!
It's been proven repeatedly that the factory filter can and will flow more air than the motor could ever desire.
That From is going to save your motor. The amount of dust the K&N lets through is disgusting
Ty
2002 Excursion with some goodies
It's been proven repeatedly that the factory filter can and will flow more air than the motor could ever desire.
That From is going to save your motor. The amount of dust the K&N lets through is disgusting
Ty
2002 Excursion with some goodies
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Junior User
Joined: Feb 2011
Posts: 55
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From: Algiers, Louisiana
Tom -
Yes, the K&N filter is pleated. Both are about 9 1/4" square. K&N is about 3/4" thick with 32 pleats. The Fram is 2 1/4" thick with 72 pleats. (I think those are the numbers. It was a long night last night.)
Yes, the K&N filter is pleated. Both are about 9 1/4" square. K&N is about 3/4" thick with 32 pleats. The Fram is 2 1/4" thick with 72 pleats. (I think those are the numbers. It was a long night last night.)
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ajstephan
1987 - 1996 F150 & Larger F-Series Trucks
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Dec 21, 2003 12:52 PM
