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#4299429 - 01/11/17 09:44 AM Oil filter with multiple oil changes
salcuta88 Offline


Registered: 02/03/15
Posts: 130
Loc: 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?
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2005 Honda Accord V6 LX - 161k
2013 Hyundai Santa Fe Sport
2015 Rocky Mountain Soul (Runs on fat)

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#4299433 - 01/11/17 09:47 AM Re: Oil filter with multiple oil changes [Re: salcuta88]
AntsinmyEyes Offline


Registered: 08/09/15
Posts: 118
Loc: Colorado
leave the filter on. the seal is one time use
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1987 mazda rx7 1.3
2005 dodge ram 5.7
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#4299435 - 01/11/17 09:48 AM Re: Oil filter with multiple oil changes [Re: salcuta88]
440Magnum Offline


Registered: 02/01/09
Posts: 8508
Loc: Texas
Leave it on. The filter gasket isn't made to seal, come off, and then seal again.
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'66 Dodge Polara & '69 Dodge Coronet R/T both 440/727
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#4299437 - 01/11/17 09:50 AM Re: Oil filter with multiple oil changes [Re: salcuta88]
TinyVoices Offline


Registered: 09/12/16
Posts: 101
Loc: Denver, CO
As others have said, leave it on.
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1993 Toyota MR2 Hardtop N/A - 148k miles - Valvoline Max Life 5w30
2006 Toyota Matrix XR AWD (GF's) - 120k miles - Valvoline Max Life 5w30

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#4299447 - 01/11/17 10:01 AM Re: Oil filter with multiple oil changes [Re: salcuta88]
Triple_Se7en Offline


Registered: 12/04/04
Posts: 7874
Loc: 1/2 hr. north 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.


Edited by Triple_Se7en (01/11/17 10:04 AM)
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#4299449 - 01/11/17 10:02 AM Re: Oil filter with multiple oil changes [Re: TinyVoices]
jacky Offline


Registered: 03/15/14
Posts: 404
Loc: 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
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#4299451 - 01/11/17 10:05 AM Re: Oil filter with multiple oil changes [Re: jacky]
salcuta88 Offline


Registered: 02/03/15
Posts: 130
Loc: 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.
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#4299453 - 01/11/17 10:09 AM Re: Oil filter with multiple oil changes [Re: jacky]
TinyVoices Offline


Registered: 09/12/16
Posts: 101
Loc: Denver, CO
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 - 148k miles - Valvoline Max Life 5w30
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#4299471 - 01/11/17 10:29 AM Re: Oil filter with multiple oil changes [Re: salcuta88]
Kuato Offline


Registered: 10/23/05
Posts: 5927
Loc: Colorado
Leave it on in between.
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#4299473 - 01/11/17 10:33 AM Re: Oil filter with multiple oil changes [Re: salcuta88]
THafeez Offline


Registered: 08/15/16
Posts: 428
Loc: Long Island
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.
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2004 Toyota Solara SE 2.4
161,000 miles
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#4299479 - 01/11/17 10:37 AM Re: Oil filter with multiple oil changes [Re: salcuta88]
Bgallagher Offline


Registered: 04/17/12
Posts: 2724
Loc: 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
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#4299494 - 01/11/17 11:01 AM Re: Oil filter with multiple oil changes [Re: jacky]
Hokiefyd Offline


Registered: 06/24/04
Posts: 14488
Loc: 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.
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2009 Honda Ridgeline RTL
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#4299499 - 01/11/17 11:09 AM Re: Oil filter with multiple oil changes [Re: salcuta88]
BrocLuno Offline


Registered: 09/06/15
Posts: 2903
Loc: 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 ...
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#4299505 - 01/11/17 11:14 AM Re: Oil filter with multiple oil changes [Re: Triple_Se7en]
hatt Offline


Registered: 01/03/12
Posts: 3812
Loc: 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.
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2013 F150 5.0, Delo 15w-30, Baldwin B7449
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#4299516 - 01/11/17 11:25 AM Re: Oil filter with multiple oil changes [Re: BrocLuno]
Ramblejam Offline


Registered: 11/05/13
Posts: 3042
Loc: 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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