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What exactly is your oil filter removing? #4812398
07/12/18 02:46 PM
07/12/18 02:46 PM
Joined: May 2018
Posts: 33
Northern KY
Elkins45 Online content OP
Elkins45  Online Content OP

Joined: May 2018
Posts: 33
Northern KY
Has anyone cut open a used oil filter to see if itís actually catching anything? Iím going to saw open a couple of the next ones I remove. As well sealed as most new engines are I wonder if the oil filter isnít just primarily an insurance policy.

Re: What exactly is your oil filter removing? [Re: Elkins45] #4812405
07/12/18 02:52 PM
07/12/18 02:52 PM
Joined: Sep 2007
Posts: 1,097
TX, USA
JMJNet Offline
JMJNet  Offline

Joined: Sep 2007
Posts: 1,097
TX, USA


  • 2017 Toyota Sienna
  • 1995 GMC Suburban 6.5L Turbo Diesel


Re: What exactly is your oil filter removing? [Re: Elkins45] #4812407
07/12/18 02:53 PM
07/12/18 02:53 PM
Joined: Oct 2014
Posts: 13,074
Canyon County Idaho
CT8 Offline
CT8  Offline

Joined: Oct 2014
Posts: 13,074
Canyon County Idaho
Oil filters catch metals and crud. Oil filters greatly prolong the life of the engine.and the oil change interval.
The air filter is the most important filter the engine has.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: What exactly is your oil filter removing? [Re: Elkins45] #4812411
07/12/18 02:56 PM
07/12/18 02:56 PM
Joined: May 2012
Posts: 2,280
The land of USA-made Subies!
SubieRubyRoo Online happy
SubieRubyRoo  Online Happy

Joined: May 2012
Posts: 2,280
The land of USA-made Subies!
Search this forum for posts by member "car51". He has compiled enough cut-open filters to educate anyone on what a filter removes from the engine. He's also a veteran, so IMHO this board owes him two sincere "Thank You For Your Service(s), Mr. Car51!"

Re: What exactly is your oil filter removing? [Re: Elkins45] #4812423
07/12/18 03:11 PM
07/12/18 03:11 PM
Joined: Dec 2017
Posts: 1,593
US
JLTD Offline
JLTD  Offline

Joined: Dec 2017
Posts: 1,593
US
Mine's removing particles of 20microns or larger, and some smaller.

To be fair, long ago engines didn't have oil filters...and they didn't last.


I'm a thickie; assimilate
But 20s have their place

Using AMSOIL‚ĄĘ

Hers: 2008 Jeep Liberty 138k, SS 5w30/Amsoil

His: 2015 4Runner 45k, OE 5w30/Wix

Re: What exactly is your oil filter removing? [Re: Elkins45] #4812424
07/12/18 03:11 PM
07/12/18 03:11 PM
Joined: Dec 2005
Posts: 10,722
Upper Midwest
kschachn Offline
kschachn  Offline

Joined: Dec 2005
Posts: 10,722
Upper Midwest
If you want to know what it catches you'll have to remove the media and perform a solvent wash while capturing the particles. You'd at least get a weight this way and maybe be able to distinguish carbon or non-metallic particles from metallic ones. Obtaining an overall view of the composition of the particles would require an acid digestion and ICP analysis, I don't know if Blackstone is capable of doing that (we used fuming nitric acid, very dangerous stuff). If you want to know the size and composition of individual particles that would take something like SEM/EDX to determine.

Just a filter wash and capture might be interesting, along with looking at it with a magnifying glass or microscope if you have one. Another crude analysis would be to use a strong magnet and see what ferrous particles you can pick up out of the particulate.


1994 BMW 530i, 241K
1996 Honda Accord, 267K
1999 Toyota Sienna, 409K
2000 Toyota ECHO, 280K
Re: What exactly is your oil filter removing? [Re: Elkins45] #4812428
07/12/18 03:16 PM
07/12/18 03:16 PM
Joined: Nov 2008
Posts: 3,454
Oshawa, Ontario Canada
JC1 Offline
JC1  Offline

Joined: Nov 2008
Posts: 3,454
Oshawa, Ontario Canada
The first oil filter on my caravan had quite a few bits of metal in the pleats.


2015 Grand Caravan SXT Plus 5w-20 Valvoline SynPower/Fram Ultra Filter
1997 Honda Civic CX 5w-30 PPPP/Fram Ultra Filter
Re: What exactly is your oil filter removing? [Re: Elkins45] #4812469
07/12/18 04:03 PM
07/12/18 04:03 PM
Joined: Mar 2016
Posts: 1,858
Western S.C.
CR94 Offline
CR94  Offline

Joined: Mar 2016
Posts: 1,858
Western S.C.
As far as stuff that's visible to the naked eye or with a simple magnifier, I typically find a few tiny black (carbon?) particles, and only occasionally a tiny shiny (metal) particle or two on my used media. I don't know about the quantity or composition of microscopic stuff, but I know there's not enough of it to change the appearance of the media surface much, and not enough to restrict air flow through the used filter much (after I soak out most of the oil).

The original factory-installed filter of my Mazda had one large metal shaving stuck part-way through one of the entrance holes of the base plate.


2011 Toyota Prius now at 96K
1981 Mazda GLC (323) retired at 606K
1972 Subaru DL retired at 190K
1954 Chevrolet retired at 121K
Re: What exactly is your oil filter removing? [Re: Elkins45] #4812472
07/12/18 04:06 PM
07/12/18 04:06 PM
Joined: Oct 2005
Posts: 4,762
Atlanta
DuckRyder Offline
DuckRyder  Offline

Joined: Oct 2005
Posts: 4,762
Atlanta
No one here has ever cut open an oil filter, that is just crazy talk... hornets hide

Oil filters do - oil filter stuff...


Robert
  • 2007 Toyota Prius Touring
  • 2005 Honda Civic Sedan
  • 1972 Ford F100
Re: What exactly is your oil filter removing? [Re: Elkins45] #4812485
07/12/18 04:33 PM
07/12/18 04:33 PM
Joined: Mar 2014
Posts: 3,718
NJ
Leo99 Offline
Leo99  Offline

Joined: Mar 2014
Posts: 3,718
NJ
It's like the lint trap in your dryer.


Without data you're just another person with an opinion. W. E. Deming

2003 Corolla 250,000 miles (RIP)
2004 Corolla 125,000 miles
2004 Rav4 370,000 miles
2015 Camry 70,000 miles
Re: What exactly is your oil filter removing? [Re: JLTD] #4812502
07/12/18 04:57 PM
07/12/18 04:57 PM
Joined: May 2013
Posts: 2,169
Saskatchewan, Canada
Johnny2Bad Offline
Johnny2Bad  Offline

Joined: May 2013
Posts: 2,169
Saskatchewan, Canada
Originally Posted By: JLTD
Mine's removing particles of 20microns or larger, and some smaller.

To be fair, long ago engines didn't have oil filters...and they didn't last.


They lasted as long as the engines with filters at the time. SBC V8 '55 no filter boss, added in '56. You'd get 100K Miles out of either of them. 120 was an outer.


'57 FL Straight 50 wt
'90 Miata 1.8L w/Rotrex Supercharger [Mobil1 0W-40]
'96 Ram 1500 [3.7L Mobil1 0W-20 / 1L 15W-50]
'01 PT Cruiser [Mobil1 0W-40]
Re: What exactly is your oil filter removing? [Re: Elkins45] #4812542
07/12/18 05:47 PM
07/12/18 05:47 PM
Joined: Jun 2014
Posts: 2,001
Ca.
UncleDave Offline
UncleDave  Offline

Joined: Jun 2014
Posts: 2,001
Ca.
This is my Ridgelines break-in oil filter Honda wanted me to leave in for 10K.


It's removing the white substance whatever it may be pretty well.
Every pleat has something in it.

It's not removing very fine metal particles very well, nor does any full flow filter really.
The dark bands are ferrous particles that went round and round till the magnet caught them.

I'm glad I used it.

Uncle Dave





Last edited by UncleDave; 07/12/18 05:52 PM.

Uncle Dave
Cat 3126/2 MB3500/Titan/RX400H/17 Ridgeline
700HP V10/ 725HP BBC/ Raptor 700/ KFX450/ YZ250/Onan 8K/ Cat3011C
Re: What exactly is your oil filter removing? [Re: Johnny2Bad] #4812561
07/12/18 05:58 PM
07/12/18 05:58 PM
Joined: Jul 2008
Posts: 1,203
British Columbia, Canada
ecotourist Offline
ecotourist  Offline

Joined: Jul 2008
Posts: 1,203
British Columbia, Canada
Originally Posted By: Johnny2Bad
They lasted as long as the engines with filters at the time. SBC V8 '55 no filter boss, added in '56. You'd get 100K Miles out of either of them. 120 was an outer.

Oh for the days of smoking cars. People would try to figure out which side of their V8 smoked - though I don't suppose it mattered very much.

Engine rebuilds (or at least valve and ring jobs) were once fairly common. Engines simply wore out. They must be pretty rare nowadays (with the notable exception of engines with having some sort of defect).


2000 BMW 528i 5MT
2007 Honda Accord EX-L 4Door V6 6MT
Re: What exactly is your oil filter removing? [Re: ecotourist] #4812572
07/12/18 06:09 PM
07/12/18 06:09 PM
Joined: Jun 2014
Posts: 2,001
Ca.
UncleDave Offline
UncleDave  Offline

Joined: Jun 2014
Posts: 2,001
Ca.
Originally Posted By: ecotourist
Originally Posted By: Johnny2Bad
They lasted as long as the engines with filters at the time. SBC V8 '55 no filter boss, added in '56. You'd get 100K Miles out of either of them. 120 was an outer.

Oh for the days of smoking cars. People would try to figure out which side of their V8 smoked - though I don't suppose it mattered very much.

Engine rebuilds (or at least valve and ring jobs) were once fairly common. Engines simply wore out. They must be pretty rare nowadays (with the notable exception of engines with having some sort of defect).


Cars don't wear out a lot anymore unless totally neglected. They just don't have a lot of load and as a consequence, they have little wear.

Hard working mid-size and 1/2 ton trucks Trucks maintained with OEM stuff and mid-grade oils and fluids wear out all the time.
Top ends go first around 1-150K and 10 years then at 15 the rings clap out.

I see this more than most guys because I have had clients with the same boat for 20-30 years that have worn out 2-3 trucks in that time towing the same routes.

UD




Last edited by UncleDave; 07/12/18 06:09 PM.

Uncle Dave
Cat 3126/2 MB3500/Titan/RX400H/17 Ridgeline
700HP V10/ 725HP BBC/ Raptor 700/ KFX450/ YZ250/Onan 8K/ Cat3011C
Re: What exactly is your oil filter removing? [Re: JLTD] #4812574
07/12/18 06:11 PM
07/12/18 06:11 PM
Joined: Mar 2016
Posts: 1,175
MT
jongies3 Online content
jongies3  Online Content

Joined: Mar 2016
Posts: 1,175
MT
Originally Posted By: JLTD
Mine's removing particles of 20microns or larger, and some smaller.

To be fair, long ago engines didn't have oil filters...and they didn't last.

Yep, and they only had a few hundred mile OCI's. Oil filters definitely do a lot to keep engines going!


2004 Toyota Tacoma 3.4 V6: Mobil 1 AFE 0W-30, FRAM PH3614 filter
1969 Mustang Mach 1 5.8 V8: PYB 10W-30, Napa Gold 1515 filter
2013 Honda 400EX ATV: Mobil 1 Racing 4t 10W-40, OEM filter
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