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Re: ISO 5011/SAE J726 test of Duramax Air Filters #492950
09/22/04 06:07 PM
09/22/04 06:07 PM
Joined: Jan 2003
Posts: 3,147
Coastal South Carolina
edwardh1 Offline
edwardh1  Offline
Joined: Jan 2003
Posts: 3,147
Coastal South Carolina
one of the best seems to be the "no brand"
what was it?

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492951
09/22/04 09:46 PM
09/22/04 09:46 PM
Joined: Jan 2003
Posts: 335
Owego, NY
Bill Plock Offline OP
Bill Plock  Offline OP
Joined: Jan 2003
Posts: 335
Owego, NY
quote:
Originally posted by edwardh1:
one of the best seems to be the "no brand"
what was it?

We're not sure of the brand ... IIRC one of the guys had bought a quantity of surplus filters that were designed for the gas trucks and donated one for the test. It was the same size as the diesel version but had less pleats. (The duramax air box is the same size as the gas trucks but the diesel filter is heavier and has more pleats).

[Smile]

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492952
09/25/04 01:48 AM
09/25/04 01:48 AM
Joined: May 2004
Posts: 243
NY
RedWolf4000 Offline
RedWolf4000  Offline
Joined: May 2004
Posts: 243
NY
Probablly a FRAM! Wouldnt that be funny? These results still dont suprise me in any way. When i look at an AC DELCO for my car i can see that its the best choice. It has the most pleats, a really wide seal and it fits in the air box so tighly compared to others. They have a great oil filter too! GM uses a good supplier.

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492953
09/29/04 11:19 PM
09/29/04 11:19 PM
Joined: Mar 2004
Posts: 4,378
Camas, WA
1sttruck Offline
1sttruck  Offline
Joined: Mar 2004
Posts: 4,378
Camas, WA
Air filters for the Dodges from Cummins are around $15. I'm looking at trying to use a large oiled foam filter as a pre filter for the stock paper filters, as the paper filters do end up with lots of dirt caked on them. The newer ones have a layer of foam on top of the pleats, which is nice as without the foam the filter area was defeated by the layer of crud.

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492954
10/17/04 09:00 PM
10/17/04 09:00 PM
Joined: Oct 2004
Posts: 47
Milwaukee
SPICER Offline
SPICER  Offline
Joined: Oct 2004
Posts: 47
Milwaukee
Hello members. My name is Arlen Spicer and I am the one who "orchestrated" this air filter study. Most everything you need to know about me, the study and why I did it is in the final study on dieselplace.com.

I joined this forum because I have gotten a lot out of bobistheoilguy.com in terms of useful information. In fact, the air filter study done by a member and published here inspired my study. I am here for you to ask any questions you would like. SPICER

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492955
02/27/06 10:39 PM
02/27/06 10:39 PM
Joined: Dec 2005
Posts: 79
Arizona
Killerbees Offline
Killerbees  Offline
Joined: Dec 2005
Posts: 79
Arizona
One year later, not a single question for Spicer?

This study is the most illuminating piece of fact separating marketing fiction, to have come along in the automotive world since electronic ignition. I would just love to have 1% of KN's marketing budget.

If there is one conclusion you should draw, it is this: There are companies that will spend an awful lot of money to convince you to buy something you don't need, and can't benefit from.

...and yes, my sceptical friends, dirt shortens engine life. But worse, $300 for that priviledge is a bit too much to pay. [Smile]

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492956
02/28/06 01:27 AM
02/28/06 01:27 AM
Joined: Oct 2004
Posts: 391
Richmond, VA
TomH Offline
TomH  Offline
Joined: Oct 2004
Posts: 391
Richmond, VA
$300 for a K&N filter?!?!?! I hope that's just a typo as I've never seen a K&N air filter for an automotive application cost even half of that.

You want a company that likes to spend money convincing you to buy unnecessary/worthless products? Ever heard of something called the Tornado?

And I still like my K&N cone filter just fine, no matter how many "tests" on them I read.

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492957
04/02/06 10:41 PM
04/02/06 10:41 PM
Joined: Mar 2005
Posts: 105
Phoenix, AZ.
Joseph Fihn Offline
Joseph Fihn  Offline
Joined: Mar 2005
Posts: 105
Phoenix, AZ.
Regarding the AC-Delco Air filters for the Duramax application, where can you buy them most reasonably (checking for a Duramax buddy)?

Does anyone know if they make an AC-Delco A/F for an '03 Dodge/Cummins?

Thanks.

Joe Fihn

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492958
04/05/06 10:36 AM
04/05/06 10:36 AM
Joined: Aug 2003
Posts: 13,068
NE,Ohio
Rand Offline
Rand  Offline
Joined: Aug 2003
Posts: 13,068
NE,Ohio
Well this is quite the old topic but since it was
ressurected I do have a couple questions..

In the test was the NEW amsoil filter an
Amsoil EA filter?

Did anyone else notice the graph for
dirt passed vs time was out of wack..
it added the dirt passed in grams to the
time of test in minutes...

IE the 20min amsoil test was 23 on the graph
because it passed 2.73g of dirt..
the 24min K&N test was 31min on the graph
because it passed 7g of dirt...

Also since the ac delco had 6+ restriction
it was tested out to 16+ restriction
while the K&N was only tested out to 14+ restriction... hardly seems fair.

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492959
04/06/06 01:46 PM
04/06/06 01:46 PM
Joined: Jan 2003
Posts: 335
Owego, NY
Bill Plock Offline OP
Bill Plock  Offline OP
Joined: Jan 2003
Posts: 335
Owego, NY
Joe,

I just bought some AC A1618C air filiters for my Duramax from DieselFiltersOnLine . Their price+shipping was the lowest I found. I bough the last batch from www.Gmpartsdirect.com (their price is good but shipping is high)

Also, I don't have any info on AC filters for the Dodge …
----------------------------------------------------------------------------------


Rand,

Answers to your questions & comments are as follows:

quote:
In the test was the NEW amsoil filter an Amsoil EA filter?
No, the new AMSOIL filter had not yet been introduced at the time of the test.

quote:
Did anyone else notice the graph for dirt passed vs time was out of wack.. it added the dirt passed in grams to the time of test in minutes..
You are correct, the scale at the left of the graph it is adding the two values - total grams of dirt passed and time to restriction. However the point of the stacked column graph is to show the relative differences between the various filters in terms of dirt loading and time to max restriction.. (I should probably edit the file to remove the 0-60 on the scale since it's not relevant. There are a few other grammatical errors I've meaning to correct as well.)

quote:
Also since the ac delco had 6+ restriction it was tested out to 16+ restriction while the K&N was only tested out to 14+ restriction... hardly seems fair.
This was a completely objective, standardized test with no agenda to make one filter look better than another.

Quoting From the report,

"The Capacity and Efficiency test report presents the test results of feeding an initially clean filter with PTI Course Test Dust (dirt) at a constant rate and airflow. The course test dust has a specific distribution of particle sizes ranging from less than 2.5 microns to greater than 80 microns (see table below). Every filter is initially tested at 350 CFM and the Initial Restriction or differential pressure across the filter is recorded in IN-H20 (Inches of Water). The filter is then tested by feeding test dust at a nominal rate of 9.8 grams per minute with a constant airflow of 350 CFM. The test is continued until the flow restriction exceeds the Initial Restriction + 10 IN-H20. At this point the test is terminated and the amount dust passed through the filter - Accumulative Gain - is measured."

So, the test is stopped when the restriction reaches the initial restriction + 10 IN-H20. Initial restriction for the K&N was 4.54 while the AC was 6.23. Hence, the AC was stopped at 16.23 and the K&N at 14.54.

[Smile]

[ April 07, 2006, 05:57 AM: Message edited by: Bill Plock ]

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492960
07/23/06 02:35 AM
07/23/06 02:35 AM
Joined: Jan 2003
Posts: 335
Owego, NY
Bill Plock Offline OP
Bill Plock  Offline OP
Joined: Jan 2003
Posts: 335
Owego, NY

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492961
08/02/06 06:45 PM
08/02/06 06:45 PM
Joined: Jul 2006
Posts: 128
Brenham, Texas
FleetFilter.com Offline
FleetFilter.com  Offline
Joined: Jul 2006
Posts: 128
Brenham, Texas
We are cheapest on WIX/ NG filters

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492962
08/07/06 06:06 PM
08/07/06 06:06 PM
Joined: Aug 2006
Posts: 2
Maryland
Rio Offline
Rio  Offline
Joined: Aug 2006
Posts: 2
Maryland
Just to bring this valuable thread up to date:

The original Amsoil filter used for this test in 2004 was most likely the Wix regular paper filter they resell.
They now have new patented nanotechnology paper filter, which offers much better flow and filtering performance then any filter listed here.
Please see the site below for technical details:
https://www.amsoil.com/lit/databulle...75_rev2_06.pdf

I am switching away from oil coated filters and found this thread most useful to confirm my findings about paper filters better filtering performance than gause coated counterparts.

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492963
08/07/06 06:11 PM
08/07/06 06:11 PM
Joined: Aug 2006
Posts: 2
Maryland
Rio Offline
Rio  Offline
Joined: Aug 2006
Posts: 2
Maryland
sorry gius the site address above had a typo,
the correct one is:
https://www.amsoil.com/lit/databulletins/g2175_rev2_06.pdf

Re: ISO 5011/SAE J726 test of Duramax Air Filters #492964
08/07/06 07:58 PM
08/07/06 07:58 PM
Joined: Jan 2003
Posts: 335
Owego, NY
Bill Plock Offline OP
Bill Plock  Offline OP
Joined: Jan 2003
Posts: 335
Owego, NY
The AMSOIL filter used in the test was a TS123 oiled-foam style filter .. [Smile]

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