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Duramax Fifth Generation: 2011-2016 (LML) Discuss the fifth generation (2011-2016) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.


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Old 05-17-2016, 09:07 PM   #21 (permalink)
Aprilwine
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Quote:
Originally Posted by Hal Hughes View Post
Aprilwine, I agree with you. When talking about the OEM air filters, which year are we talking about. I know earlier years used the Donaldson air filter as OEM. Since at least 2011,that is no longer true. I switched my air box out to a Volant with the Donaldson Powercore air filter. I did that because of the issues some were having with the plastic piece inside the air box breaking and being sucked into the intake. I believe if someone has a S&B intake, they can get a Donaldson Powercore filter for it.

IIRC, the years(Although I can't remember specifics) that the Dmax could use the Donaldson as an OEM replacement was when the filters were round and not the flat panel type they use today.
I have the S&B intake with the Donaldson on my truck. It seemed to have a bit better throttle response, but that could have just been in my head, however, I do like the idea of better filtration(Efficiency 99.97%), even if it's only a small amount. The Donaldson flows much better than the OEM filter as well (IIRC, up to 800CFM), but on a stock motor, IMHO, I don't think you'd notice much, if any, difference.

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Last edited by Aprilwine; 05-17-2016 at 09:11 PM.
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Old 05-17-2016, 09:16 PM   #22 (permalink)
diesail
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There has also been several posts about K&N filters fowling the MAF sensor.

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Old 02-09-2019, 06:59 PM   #23 (permalink)
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Quote:
Originally Posted by IGO1320 View Post
Well I do use a K&N filter and have on all my vehicles since 1980. My current Duramax has 557k miles it does not use oil, it does not leak, it does not have excessive blow by, and my UOI have low silicone (measurement of dirt that has travelled into the crankcase). I did not buy it for more power, I find it is a more cost efficient method of filtering the air. Most are probably just as well served to use the stock filter. I think the test you see are not very "real world" and K&N filters sufficiently to prevent any damage. I live on a sand road and have towed in all conditions around the country, my UOI results have been consistent for years.
I am curious if you have maintained oil analysis over the life of the engines using K&N?
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Old 02-15-2019, 02:24 PM   #24 (permalink)
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Likely the silica reading will be higher than normal. I seem to recall that was a problem with K&N and oil testing.
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Old 02-15-2019, 02:49 PM   #25 (permalink)
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Quote:
Originally Posted by lynn1130 View Post
Likely the silica reading will be higher than normal. I seem to recall that was a problem with K&N and oil testing.
Exactly... I have a story about this... More later.
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Old 02-16-2019, 05:37 AM   #26 (permalink)
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Quote:
Originally Posted by navybuff View Post
Exactly... I have a story about this... More later.
curious on that, standing by
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Old 10-24-2019, 04:39 PM   #27 (permalink)
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Quote:
Originally Posted by navybuff View Post
Exactly... I have a story about this... More later.
OK, sorry for the long delay, but needed to get some miles on my truck in order to get the oil reports over a period of time...

https://www.dieselplace.com/forum/at...1&d=1571942406

Ok, this is going to be long..., first, check out the report above. For those that are familiar with Black Stone then this will be a "no brainer".

This whole saga started when I changed the stock filter to an K&N, bought from local auto store. I installed it when the truck had about 35K on it (column "E")

~6000 miles later I get column "D" results back from Blackstone. Its downhill after that...

The filter did not fit on the edges of the housing, if you set it on the air box there were gaps on the edges. I attempted to remedy this by putting grease on the edge of the air box, but that was a complete mess.

I called them and they immediately sent me a new filter at (Column "C") results.

The new filter did not fit any better and I used the "Grease method" to seal it better, which is BS. (Column "B") Results

Well, I happen to live close to K&N company headquarters in Riverside California. So I decided to go have a talk with them about all of the column results. I had them disassemble the filter housing and see what my concerns were, the damn filter did not fit in the housing correctly and Black Stone had told me to check my air intake system.

K&N engineers and assistant production manager were all present when the air box was disassembled in their parking lot. The appeared shocked but as usual, unapologetic and offering all kinds of other possibilities for the high numbers on the reports... This all took place on the column "B" numbers.

Finally, they told me that they were going to redesign the mold and send me a replacement filter from the new design, which as it turned out, had a larger outside plastic/rubber frame which made the filter fit much better. I installed the new filter and put 6000 miles on it (Column "A" Results). Well all be damn, see for yourself...

And of course when they seen the latest report, they sent this to me:

" After reviewing your notations on the Blackstone Oil samples below there was low silicone both before and after your visit with us, this was with the “old” filter in service on your vehicle. While we cannot further speculate on what caused the elevated Silicon, we do know that the K&N air filter was not the cause.
While we were eager to assist and address any personal concerns you had, to be clear there was and is no defect in the 33-2466 air filter. Thanks again for your concerns Ken, have a great day.

Best Regards,

Troy Green.
Warranty Department. "


No Mention of the high Iron and Aluminum numbers


Bottom line here, if you have this filter and are not getting oil reports, you are killing your engine, a slow but sure death...


K&N sucks.

PS
I have all the emails and correspondence between me and K&N if needed

2015 Silverado 6.6 Duramax LML








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File Type: jpg k n new results2.jpg (82.3 KB, 8 views)
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Last edited by navybuff; 10-24-2019 at 04:43 PM.
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Old 10-24-2019, 11:54 PM   #28 (permalink)
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Quote:
Originally Posted by ktmrfs View Post
the 2" of water differnce in restriction between the OEM and other filters is virtually negligible. while it seems like a nice number, 2" of Water is about 0.07 PSI.



winner IMHO is OEM by a large margin.


I came up with .385?


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Old 10-24-2019, 11:56 PM   #29 (permalink)
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Originally Posted by Cperk View Post
I came up with .385?


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Never mind my math is wrong as always


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Old 10-24-2019, 11:58 PM   #30 (permalink)
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Quote:
Originally Posted by Cperk View Post
Never mind my math is wrong as always


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0.0833


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