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#4600881 - 12/11/17 05:02 PM Filter change by minder at 42K miles
circuitsmith Offline


Registered: 12/17/09
Posts: 607
Loc: Wash, DC
The WIX filter minder on my Toyota (in the sig) finally reached 11" after 6 years & 9 months.
Gauge checked after a WOT run to 5000 rpm.

Dirty side:


Clean side:


Close up:


The new filter reached one click below 8" restriction.
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2006 Toyota Matrix 5-sp. 1zz-fe 5000mi/12mo OCI
Any major brand dino 5w-30 on sale

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#4600936 - 12/11/17 06:13 PM Re: Filter change by minder at 42K miles [Re: circuitsmith]
Motorsen Offline


Registered: 06/27/10
Posts: 9
Loc: Denmark
Have you tried to put a new vs the old filter on a scale to see how much debris it actually trapped? According to Fleetguard a 14Liter diesel engine is worn out when it have ingested 227 grams of dirt!

Motorsen

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#4600942 - 12/11/17 06:20 PM Re: Filter change by minder at 42K miles [Re: circuitsmith]
Kira Offline


Registered: 08/19/10
Posts: 4888
Loc: Champlain/Hudson Valley
Many thanks for the pics. They "always" say, there's more life to an air filter than we think.

This is what I think.

1) The air velocity drop which occurs in the lower portion of air cleaner housings allows heavier dirt to precipitate out.

ERGO the dirt which gets to the filter is finer. I believe this is plainly evident.

2) In the absence of repeated dirty exposure I think 30K is a great time to economically replace the filter. Mine look much like yours after that much time.

3) It's a good part to need periodically so you can add it to parts orders and reach 'Free Shipping" thresholds regularly.

4) I also think it's OK to avoid drilling a hole and risking creating a source of unfiltered air in your upper housing.

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#4600964 - 12/11/17 06:54 PM Re: Filter change by minder at 42K miles [Re: circuitsmith]
DoubleWasp Offline


Registered: 05/21/12
Posts: 5227
Loc: Fort Lauderdale, FL
Drill the hole with any competency at all, and there won't be a source of unfiltered air.
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#4600985 - 12/11/17 07:14 PM Re: Filter change by minder at 42K miles [Re: circuitsmith]
WobblyElvis Offline


Registered: 09/23/14
Posts: 1270
Loc: Toronto Canada
Circuitsmith did the right thing by using the filter it's proper service life. Changing an air filter too often is not good for the engine. Good Job!

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#4601147 - 12/11/17 10:51 PM Re: Filter change by minder at 42K miles [Re: circuitsmith]
Colt45ws Offline


Registered: 08/15/06
Posts: 9612
Loc: Central Washington
Excellent. Did you notice any performance increase with a fresh filter?
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#4601170 - 12/11/17 11:41 PM Re: Filter change by minder at 42K miles [Re: circuitsmith]
rrounds Offline


Registered: 07/05/07
Posts: 938
Loc: SACRAMENTO, CA
That's great. You changed it out before it got loaded up with to much dirt and you got the most miles out of it. The next filter may last longer or shorter depending how clean the air is. That's what so great about a restriction gauge, it tells you when the time is right to change the filter out.

ROD
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#4602688 - 12/13/17 03:26 PM Re: Filter change by minder at 42K miles [Re: Colt45ws]
circuitsmith Offline


Registered: 12/17/09
Posts: 607
Loc: Wash, DC
Originally Posted By: Colt45ws
Did you notice any performance increase with a fresh filter?


None at all. The 4-6" difference in restriction (new vs old) works out to ~2% difference in wide open peak power.
If I could make the intake plumbing "perfect" and eliminate the 6-7" of new filter restriction
that could gain another 2%.
_________________________
2006 Toyota Matrix 5-sp. 1zz-fe 5000mi/12mo OCI
Any major brand dino 5w-30 on sale

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#4603032 - 12/13/17 10:22 PM Re: Filter change by minder at 42K miles [Re: circuitsmith]
CR94 Offline


Registered: 03/20/16
Posts: 966
Loc: Western S.C. since 1996
Originally Posted By: circuitsmith
... The 4-6" difference in restriction (new vs old) works out to ~2% difference in wide open peak power. ...
Where does the 4" to 6" come from? It looks like only 11"-8"= 3" difference in the initial post.
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#4603036 - 12/13/17 10:40 PM Re: Filter change by minder at 42K miles [Re: circuitsmith]
JHZR2 Offline



Registered: 12/14/02
Posts: 41410
Loc: New Jersey
That really doesn't look terribly dirty. Somewhat surprising really...

If it took 42k for your minder to recommend replacement, then 36k without a minder really isn't that bad of an idea.

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#4603520 - 12/14/17 01:00 PM Re: Filter change by minder at 42K miles [Re: circuitsmith]
circuitsmith Offline


Registered: 12/17/09
Posts: 607
Loc: Wash, DC
Originally Posted By: CR94
Originally Posted By: circuitsmith
... The 4-6" difference in restriction (new vs old) works out to ~2% difference in wide open peak power. ...
Where does the 4" to 6" come from? It looks like only 11"-8"= 3" difference in the initial post.


From my orig post:
Originally Posted By: circuitsmith
The new filter reached one click below 8" restriction.


I take that to be 5" to 7". 11"-7"= 4.
_________________________
2006 Toyota Matrix 5-sp. 1zz-fe 5000mi/12mo OCI
Any major brand dino 5w-30 on sale

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