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Old 03-28-2013, 03:38 PM   #11
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Originally Posted by Filthy Beast View Post
K&N Consumer Protection Pledge
I used to use K&N filters until I bought the diesel and saw Independant test showing the stock AC filter that is in it flows more air and filters better.
I heard this too.
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Old 03-28-2013, 03:54 PM   #12
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never said they were bad filters. and racers do use them for expensive engines. i also understand that from my few post count and join date i am new to this forum and am sorry if i steeped on any one toes. i only speak from30 years experience as a mechanic
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Old 03-28-2013, 03:57 PM   #13
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I use them but one has to balance the hype and advertising with some common sense. Today's technology is a lot different than years ago. The auto industry never bothered to use MPG as a selling point. Today that's a very different story. If they can boost MPG and performance just by installing a really good free flowing air cleaner I believe they'd do it. Case in point. I have advocated Mobil 1 oil for 40 years. Back n the 70's I read nothing that caused me be skeptical of the claim of Mobil 1 and that's still true today. You might say then why won't the Auto Industry use it exclusively??? Good question. It's probably political, like oil in the pocket of the politicians. Now we get to the Corvette. Sometime back in the mid to late 80's Corvette came out with Mobil 1 from the factory. WHY?? From a really, really good source at Valvoline I found out that they took the oil cooler off the Corvette to save weight and the oil temps went to high so they switched to Mobil 1 and the temps came back down. Today the Vette, s far as I know and that may not be up to date, still come from the factory with Mobil 1.
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Old 03-28-2013, 04:07 PM   #14
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Just an opinion my Dodge diesel guy told me to trash my K&N because they were "cheap junk" & buy a afe "gold" filter .....I did & I must say they is no comparing the two .....The K&N was like comparing a VW to a BMW the quality of the unit is so much better with the afe................... I do also run a 4" exhaust but the bullydog tuner had to fall off too what a piece of junk....... (They were on the truck when I bought it)
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Old 03-28-2013, 04:30 PM   #15
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K&N filters work great and breath well for gas engines. The fine particles that are allowed through get burnt in the fuel/air mixture on top of the piston and there’s no damage. I don’t use one on a diesel because that air charge goes through the compressor wheel of the turbo and those fine particles erode the leading edge of the compressor. I’ve seen the results of using a free flowing air filter on diesels. I don't believe that they're cheap junk though. My 2 cents.
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Old 03-28-2013, 04:52 PM   #16
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I only use stock Ford filters in my Truck

Important information about http://www.gmtruckcentral.com/articles/air-filter-study.html
I know this is a GM test. I have seen the same type for Ford
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Old 03-28-2013, 06:28 PM   #17
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Quote:
Originally Posted by Frank-VA View Post
I only use stock Ford filters in my Truck

Important information about http://www.gmtruckcentral.com/articles/air-filter-study.html
I know this is a GM test. I have seen the same type for Ford
Thanks Frank. The air filter link and the oil filter link are now part of my library.
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