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Oil filter with multiple oil changes #4299429
01/11/17 10:44 AM
01/11/17 10:44 AM
Joined: Feb 2015
Posts: 487
NC
Matagonka Offline OP
Matagonka  Offline OP
Joined: Feb 2015
Posts: 487
NC
Let's say you use your Fram Ultra or Mobil 1 EP for 2 or even 3 oil changes...

Do you remove the filter and drain out the old oil from the filter as well, or just drain the engine and let the little amount of oil in the filter mix in with the new engine oil?

Re: Oil filter with multiple oil changes [Re: Matagonka] #4299433
01/11/17 10:47 AM
01/11/17 10:47 AM
Joined: Aug 2015
Posts: 200
Colorado
AntsinmyEyes Offline
AntsinmyEyes  Offline
Joined: Aug 2015
Posts: 200
Colorado
leave the filter on. the seal is one time use


1987 mazda rx7
2004 mazda rx8
1995 miata
2005 dodge ram
Re: Oil filter with multiple oil changes [Re: Matagonka] #4299435
01/11/17 10:48 AM
01/11/17 10:48 AM
Joined: Feb 2009
Posts: 8,776
Texas
440Magnum Offline
440Magnum  Offline
Joined: Feb 2009
Posts: 8,776
Texas
Leave it on. The filter gasket isn't made to seal, come off, and then seal again.


'66 Dodge Polara & '69 Dodge Coronet R/T both 440/727
'08 Ram 1500 4.7/545RFE
'12 Challenger SRT8 392/6-speed
'99 XJ 4x4 4.0/AX15, '14 WK2 4x4 3.6/8HP
Re: Oil filter with multiple oil changes [Re: Matagonka] #4299437
01/11/17 10:50 AM
01/11/17 10:50 AM
Joined: Sep 2016
Posts: 513
Vienna, VA
TinyVoices Offline
TinyVoices  Offline
Joined: Sep 2016
Posts: 513
Vienna, VA
As others have said, leave it on.


1993 Toyota MR2 Hardtop N/A - 160k miles - Valvoline Max Life 5w30
2006 Toyota Matrix XR AWD (Fiancee) - 130k miles - Valvoline Max Life 5w30
Re: Oil filter with multiple oil changes [Re: Matagonka] #4299447
01/11/17 11:01 AM
01/11/17 11:01 AM
Joined: Dec 2004
Posts: 9,326
1/2 hr N.E. of Detroit
Triple_Se7en Offline
Triple_Se7en  Offline
Joined: Dec 2004
Posts: 9,326
1/2 hr N.E. of Detroit
Originally Posted By: salcuta88
Let's say you use your Fram Ultra or Mobil 1 EP for 2 or even 3 oil changes...

Do you remove the filter and drain out the old oil from the filter as well, or just drain the engine and let the little amount of oil in the filter mix in with the new engine oil?


I loosen the filer, then re-tighten. Many vehicles today are designed so the filter sits in a manner where half of it's contents will depart. Also a number of vehicles exist today that are designed with oil channels that sit right above the top of the filter threads. These oil channels will empty also.

So in most cases today, no need to remove the old filter, then re-tighten it. Just loosen it half-way, then tighten it.

Also, I don't oil my filter gasket, when I initially install it new. I use Gorilla Grease on the gasket and there's no need to apply anything more to the gasket, when re-tightening it. That particular grease is like an anti-seize lubricant. So it eases removal.

Last edited by Triple_Se7en; 01/11/17 11:04 AM.

She's the only sister-in-law I have. But she's not my favorite.
Re: Oil filter with multiple oil changes [Re: TinyVoices] #4299449
01/11/17 11:02 AM
01/11/17 11:02 AM
Joined: Mar 2014
Posts: 404
wv usa
jacky Offline
jacky  Offline
Joined: Mar 2014
Posts: 404
wv usa
I would never use any filter for more than one oil change, but I would like to see pics of a a filter from that situation


2001 chevy cavalier 148,000
Re: Oil filter with multiple oil changes [Re: jacky] #4299451
01/11/17 11:05 AM
01/11/17 11:05 AM
Joined: Feb 2015
Posts: 487
NC
Matagonka Offline OP
Matagonka  Offline OP
Joined: Feb 2015
Posts: 487
NC
Originally Posted By: jacky
I would never use any filter for more than one oil change, but I would like to see pics of a a filter from that situation


There are multiple threads with cut open oil filters that were used for more than 1 OC.

Re: Oil filter with multiple oil changes [Re: jacky] #4299453
01/11/17 11:09 AM
01/11/17 11:09 AM
Joined: Sep 2016
Posts: 513
Vienna, VA
TinyVoices Offline
TinyVoices  Offline
Joined: Sep 2016
Posts: 513
Vienna, VA
Originally Posted By: jacky
I would never use any filter for more than one oil change, but I would like to see pics of a a filter from that situation


Tons of cut and post threads of oil filter from multiple OCIs.


1993 Toyota MR2 Hardtop N/A - 160k miles - Valvoline Max Life 5w30
2006 Toyota Matrix XR AWD (Fiancee) - 130k miles - Valvoline Max Life 5w30
Re: Oil filter with multiple oil changes [Re: Matagonka] #4299471
01/11/17 11:29 AM
01/11/17 11:29 AM
Joined: Oct 2005
Posts: 7,094
Colorado
Kuato Offline
Kuato  Offline
Joined: Oct 2005
Posts: 7,094
Colorado
Leave it on in between.


Thick vs Thin test: 15k / 43k miles complete
Re: Oil filter with multiple oil changes [Re: Matagonka] #4299473
01/11/17 11:33 AM
01/11/17 11:33 AM
Joined: Aug 2016
Posts: 654
New Jersey
THafeez Offline
THafeez  Offline
Joined: Aug 2016
Posts: 654
New Jersey
Leave it on. I asked this specific question to a FRAM representative. They said not to take it off because the seal can only be used once. The warranty on their filter is also void if you take it off between OCI's because the gaskets seal is compromised.


2004 Toyota Solara SE 2.4 2AZFE
182,000 miles
Castrol Magnatec Semi-Syn 5W30
Royal Purple 20-400 oversize 2nd run
Re: Oil filter with multiple oil changes [Re: Matagonka] #4299479
01/11/17 11:37 AM
01/11/17 11:37 AM
Joined: Apr 2012
Posts: 3,159
Boston, MA
Bgallagher Offline
Bgallagher  Offline
Joined: Apr 2012
Posts: 3,159
Boston, MA
I did that with a mobil 1 extended. I have one more filter left. I drained the oil, refilled and left the filter on. I will replace the filter the next oil change before I hopefully trade it in


2017 Chevy Traverse - 28k - Delco Dexos 1 and PF63
2014 Chevy Equinox - 22k - Delco Dexos 1 and PF457G
2015 GMC Terrain - 22k- Delco Dexos 1 and PF457G
Re: Oil filter with multiple oil changes [Re: jacky] #4299494
01/11/17 12:01 PM
01/11/17 12:01 PM
Joined: Jun 2004
Posts: 14,505
Top of Virginia
Hokiefyd Offline
Hokiefyd  Offline
Joined: Jun 2004
Posts: 14,505
Top of Virginia
Originally Posted By: jacky
I would never use any filter for more than one oil change, but I would like to see pics of a a filter from that situation


An oil filter used for two 5,000 mile oil change intervals will look absolutely no different from an oil filter used for one 10,000 mile oil change. Oil change intervals doshould not dictate the oil filter change interval. The filter change interval should be commensurate with the type and quality of the filter.

Re: Oil filter with multiple oil changes [Re: Matagonka] #4299499
01/11/17 12:09 PM
01/11/17 12:09 PM
Joined: Sep 2015
Posts: 5,849
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,849
Kalifornia Kollective
As I have stated before, the State Fleet Admin ran tests years ago and determined that the most cost effective strategy to long tern vehicle ownership is oil changes every 6K and filters every other time. There are also paper over in technical that describe the benefits of retained oil at the time of change. the consensus is that 10~20% retained is best.

This has to do with AW compounds that your engine makes as oil ages in the motor. Fresh oil has none of these. 80% replacement will get the TBN back up and the oil clean enough. and the benefits of the retained oil will do until the new stuff has had a chance to make some.

So I'm going at least two changes. Shannow and I are changing the filters a week or two after the second oil change so that the retained is doing its job.

The life of filters and oil are not coincidental. Changing both is a matter of convenience for the guy on the ground or in the pit. Oil gets dirty, contaminated with chemical by-products of combustion, changes it viscosity by shearing, etc. Only the dirty part impacts the filter. And it takes a lot more dirt and soot than one OCI to do in a filter.

Ideally filters would be changed like in marine and stationary when the differential gauge pressures on both side said they needed to be changed. The oil would be changed based on UOA's. In this scenario, the two never coincide. Cars are just done the way they are because of convenience and caution ...


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Oil filter with multiple oil changes [Re: Triple_Se7en] #4299505
01/11/17 12:14 PM
01/11/17 12:14 PM
Joined: Jan 2012
Posts: 4,610
Florida
hatt Offline
hatt  Offline
Joined: Jan 2012
Posts: 4,610
Florida
Originally Posted By: Triple_Se7en
Originally Posted By: salcuta88
Let's say you use your Fram Ultra or Mobil 1 EP for 2 or even 3 oil changes...

Do you remove the filter and drain out the old oil from the filter as well, or just drain the engine and let the little amount of oil in the filter mix in with the new engine oil?


I loosen the filer, then re-tighten. Many vehicles today are designed so the filter sits in a manner where half of it's contents will depart. Also a number of vehicles exist today that are designed with oil channels that sit right above the top of the filter threads. These oil channels will empty also.

So in most cases today, no need to remove the old filter, then re-tighten it. Just loosen it half-way, then tighten it.

Also, I don't oil my filter gasket, when I initially install it new. I use Gorilla Grease on the gasket and there's no need to apply anything more to the gasket, when re-tightening it. That particular grease is like an anti-seize lubricant. So it eases removal.
Sounds like a recipe to make a mess and get contaminants into the system/seal. If I went thought the trouble to mess with it I'd simply change it.


2013 F150 5.0, PUP 10W-30, Wix 57502
2010 Camry 2.5, GTX 5W-20, Fram Ultra XG9972
Re: Oil filter with multiple oil changes [Re: BrocLuno] #4299516
01/11/17 12:25 PM
01/11/17 12:25 PM
Joined: Nov 2013
Posts: 3,212
Kentucky
Ramblejam Offline
Ramblejam  Offline
Joined: Nov 2013
Posts: 3,212
Kentucky
Originally Posted By: BrocLuno
As I have stated before, the State Fleet Admin ran tests years ago and determined that the most cost effective strategy to long tern vehicle ownership is oil changes every 6K and filters every other time.

Have you ever provided a link to this report?

California OFAM follows this (oil and filter changed every 6,000 miles or 6 months normal use, or 4,000 miles severe use): https://www.documents.dgs.ca.gov/dgs/fmc/gs/ofam/dgsofam0035.pdf

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