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#4637630 - 01/17/18 11:22 AM Air Filter Replacement
coopns Offline


Registered: 02/16/05
Posts: 790
Loc: Scituate MA
Seems like air filters never get very dirty. I check mine each oil change and they are a bit discolored/small debris.

Do cars just run cleaner now? Depend on car or driving conditions?

Just chatting...
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#4637635 - 01/17/18 11:26 AM Re: Air Filter Replacement [Re: coopns]
Linctex Offline


Registered: 12/31/16
Posts: 6160
Loc: Waco, TX
Originally Posted By: coopns
Do cars just run cleaner now? Depend on car or driving conditions?


An air filter getting dirty doesn't have anything to do with a cleaner running car. It all on "environment"

You probably spend all your time on clean pavement, away from country roads or construction sites.
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#4637648 - 01/17/18 11:40 AM Re: Air Filter Replacement [Re: coopns]
901Memphis Offline


Registered: 08/14/10
Posts: 12893
Loc: Northern Kentucky
Impossible to see debris loading, that's why we have restriction gauges. I usually just change mine every 3-5 years.
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#4637678 - 01/17/18 12:13 PM Re: Air Filter Replacement [Re: coopns]
doitmyself Offline


Registered: 06/03/02
Posts: 6226
Loc: MI
It seems that the old carburated engines turned air filters much more "dirty looking". Member Widman from Bolivia had some good threads on air filters showing how we tend to replace them much earlier than needed.

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#4637739 - 01/17/18 01:27 PM Re: Air Filter Replacement [Re: coopns]
Chris142 Offline


Registered: 06/05/03
Posts: 16835
Loc: Deplorable in apple valley, ca
Come here! I don't get 5k out of my diesel air filter. About 10k out of my Jeep's before it Rob's it's power because it's plugged.
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#4637781 - 01/17/18 02:12 PM Re: Air Filter Replacement [Re: coopns]
Kestas Offline



Registered: 06/04/02
Posts: 12341
Loc: The Motor City
I got 105K on one of my filters before it tripped and engine code. The filter still looked okay, until you put it up to the light and couldn't see light through it. Now I know not to got beyond 60K.

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#4637830 - 01/17/18 03:17 PM Re: Air Filter Replacement [Re: Kestas]
Kira Offline


Registered: 08/19/10
Posts: 5257
Loc: Champlain/Hudson Valley
Remember: Today's air filters live above a velocity drop box.

Dirty air enters through one hole or another then it's immediately in a large box (below the filter element) where the air's velocity drops.

Large (as in heavy) dirt precipitates out and only the finer stuff reaches the element. That's why they don't "look dirty".

The funny thing with my car was that soon after I bought it the filter was 30,000 miles old. I'm happy to change them then.
I lifted the element out and gobs of sand fell out. There was a lot of it to be sure.
I had no thought of tapping the sand out and possibly reusing the element thought I'm sure the "100,000 mile guys" would scold me for wastefulness.

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#4637843 - 01/17/18 03:28 PM Re: Air Filter Replacement [Re: Kira]
Malo83 Offline


Registered: 08/08/08
Posts: 2003
Loc: Cali
I do annual air filter changes, i sleep better knowing my engine isn't laboring to breath. banana

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#4637848 - 01/17/18 03:35 PM Re: Air Filter Replacement [Re: coopns]
SilverSnake Offline


Registered: 05/29/13
Posts: 592
Loc: Florida
I change the Air Filter every 15,000 miles on my vehicles. On the whole house generator, every year.
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2016 Charger, 6.4L-485 HP (PUP 0W-40)
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2008 20KW Generac (Amsoil 10W-30/30)

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#4637904 - 01/17/18 04:40 PM Re: Air Filter Replacement [Re: coopns]
andyd Offline


Registered: 09/25/04
Posts: 7158
Loc: Marshfield , MA
All depends on the car's environment. I replace the filters when I bought a car, then replaced with every timing belt change at 60K
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1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
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#4637985 - 01/17/18 05:45 PM Re: Air Filter Replacement [Re: coopns]
HoosierJeeper Offline


Registered: 11/23/16
Posts: 1276
Loc: WI
I probably swap them every couple years.
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#4638039 - 01/17/18 06:26 PM Re: Air Filter Replacement [Re: coopns]
Insertcoolname Offline


Registered: 08/28/17
Posts: 158
Loc: South Texas
K&N hi flow filters any good? Just wondering
if anyone has any experience with them...
I run both paper and k&n but not sure if its worth it
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#4638088 - 01/17/18 07:04 PM Re: Air Filter Replacement [Re: Insertcoolname]
DoubleWasp Offline


Registered: 05/21/12
Posts: 5236
Loc: Fort Lauderdale, FL
Originally Posted By: Insertcoolname
K&N hi flow filters any good? Just wondering
if anyone has any experience with them...
I run both paper and k&n but not sure if its worth it


There is a lot of UOA evidence out there than K&Ns let a huge amount of dirt through. Stick with paper, and leave the K&N on the track where it belongs.
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#4638195 - 01/17/18 08:25 PM Re: Air Filter Replacement [Re: DoubleWasp]
irv Offline


Registered: 10/08/06
Posts: 1078
Loc: Oshawa, Ont. Canada
Originally Posted By: DoubleWasp
Originally Posted By: Insertcoolname
K&N hi flow filters any good? Just wondering
if anyone has any experience with them...
I run both paper and k&n but not sure if its worth it


There is a lot of UOA evidence out there than K&Ns let a huge amount of dirt through. Stick with paper, and leave the K&N on the track where it belongs.


X2. I had a guy on an ATV forum telling me how good his K&N filter was. He said after numerous dusty trail rides, his filter still looked great. I replied and thanked him for proving my point that K&N's sucked at filtering but were great at flowing air. Surprisingly, I never heard back from him. crackmeup
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2017 Chevy Impala 3.6 Ltr.
2013 Ram Hemi Bighorn QC 4x4
PP and/or PUP for both vehicles.

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#4638651 - 01/18/18 10:30 AM Re: Air Filter Replacement [Re: coopns]
circuitsmith Offline


Registered: 12/17/09
Posts: 620
Loc: Wash, DC
Here's my experience with a restriction gauge:

https://bobistheoilguy.com/forums/ubbthreads.php/topics/4600881
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2017 Hyundai Tucson SE, 5000mi/12mo OCI

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