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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, 08:07 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 08:11 PM.
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Old 05-17-2016, 08:16 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, 05:59 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, 01:24 PM   #24 (permalink)
lynn1130
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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, 01:49 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, 04:37 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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