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#3214830 - 12/12/13 07:02 PM Drain Filter If I Reuse It?
JerryBob Offline


Registered: 04/11/13
Posts: 724
Loc: Colorado
I have been reading that some filter can do 15k, and get more efficient in that time. However 15k is at least twice the OCI that I want to do.

If I choose to reuse a filter, should I at least unscrew it and drain the old oil out?

On both my vehicles, the filter mounts mouth-up, and probably has at least 1/4 quart of oil in it. I'd like to get rid of that oil if it is advisable.
_________________________
2002 Honda Odyssey TGMO 0w20 M1-104 Filter
2015 Toyota Tacoma M1 EP 5w30 XG3614 Filter

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#3214842 - 12/12/13 07:09 PM Re: Drain Filter If I Reuse It? [Re: JerryBob]
actionstan Offline


Registered: 05/22/13
Posts: 488
Loc: Ohio
I wouldn't recommend it, Id be worried the gasket wouldn't make a good seal the second time around. If you can get replacement gaskets for your size filter, AND get the filter off without denting/damaging it, i would say go for it.

Personally.. Id just switch the filter out every time, and use a cheaper filter.


Edited by actionstan (12/12/13 07:11 PM)
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#3214845 - 12/12/13 07:10 PM Re: Drain Filter If I Reuse It? [Re: JerryBob]
raytseng Offline


Registered: 12/11/08
Posts: 801
Loc: CA
don't unscrew. You're more likely to mess something up with the seal.

There's also more than another 1/4quart of oil hiding around in the other galleys and parts of your engine.

Plus, if the oil is so "bad" then you've already been using "bad" oil in your car for the last portion of your interval. You should be changing the oil before it gets that bad.


Edited by raytseng (12/12/13 07:11 PM)

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#3214853 - 12/12/13 07:15 PM Re: Drain Filter If I Reuse It? [Re: JerryBob]
Warstud Offline


Registered: 09/02/05
Posts: 3371
Loc: MIchigan
True: It will be more efficient as it traps more dirt...but only to a point though and then it becomes restrictive. You could remove the oil filter and drain it but I wouldn't.

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#3214879 - 12/12/13 07:36 PM Re: Drain Filter If I Reuse It? [Re: JerryBob]
Lead Shoes Offline


Registered: 03/03/10
Posts: 2431
Loc: Mn
5 dollars or the hassle of spilling oil everywhere...

And a filter always gets more efficient the more clogged up it becomes, just switch to a cheaper filter if you are that concerned about saving money.
_________________________
1992 BMW 325i M50b25 168k
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#3214901 - 12/12/13 07:49 PM Re: Drain Filter If I Reuse It? [Re: JerryBob]
chubbs1 Offline


Registered: 06/09/10
Posts: 4574
Loc: Merritt Island FL, USA
If it is easy to get to, I choose to drain the oil out of the filter mount. I have never had an issue getting the filter sealed back on properly. That is just the way I do it.
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'12 Charger SXT
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'11 Hyundai Sonata GLS
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#3214939 - 12/12/13 08:17 PM Re: Drain Filter If I Reuse It? [Re: JerryBob]
gregk24 Offline


Registered: 04/13/13
Posts: 3779
Loc: FL, USA
If you drain it you will be giving it another "dry start". If you going to do that, you might as well just use a new filter.
_________________________
2006 Honda Accord 131K
TGMO 0w20

2005 Chevy Uplander 126K
VML SB 5w30

1992 Ford Ranger 338K
MS5K 10w30

1991 Buick Park Avenue 116K
MSHM SB 10w30

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#3214964 - 12/12/13 08:35 PM Re: Drain Filter If I Reuse It? [Re: JerryBob]
widman Offline


Registered: 05/27/02
Posts: 3124
Loc: Bolivia
Seals are made for single use, single compression. One time. You are risking your engine.
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#3214973 - 12/12/13 08:49 PM Re: Drain Filter If I Reuse It? [Re: JerryBob]
Rolla07 Offline


Registered: 11/05/11
Posts: 2139
Loc: MTL, CANADA
A new filter every 7500 miles is not exactly wasteful. Id rather have clean oil and a new filter than worry about the negligable increase in efficiency of reusing an old one.
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2007 Corolla Red Pearl 125k miles
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#3214988 - 12/12/13 09:13 PM Re: Drain Filter If I Reuse It? [Re: widman]
djb Offline


Registered: 01/16/06
Posts: 530
Loc: Maryland
Originally Posted By: widman
Seals are made for single use, single compression. One time. You are risking your engine.


Metallic seals, yes. The soft metal used (aluminum) will work harden.

Elastomer seals... no. Most types eventually harden, but a few compressions hwile they are still flexible won't age them significantly.

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#3215027 - 12/12/13 10:09 PM Re: Drain Filter If I Reuse It? [Re: raytseng]
y_p_w Offline


Registered: 05/06/05
Posts: 2726
Loc: SF Bay Area
Originally Posted By: raytseng
don't unscrew. You're more likely to mess something up with the seal.

There's also more than another 1/4quart of oil hiding around in the other galleys and parts of your engine.

Plus, if the oil is so "bad" then you've already been using "bad" oil in your car for the last portion of your interval. You should be changing the oil before it gets that bad.

1/4 quart? Usually more than that. My wife's Civic owners manual says a 4.4 quart total capacity with 3.2 quarts change w/o a new filter and 3.4 quarts change with a new filter. Apparently there's a lot of space in that engine for the oil to hide, even with a tiny overall capacity.

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#3215034 - 12/12/13 10:15 PM Re: Drain Filter If I Reuse It? [Re: JerryBob]
Eddie Offline


Registered: 12/07/03
Posts: 7260
Loc: Florida, Cape Coral
I vote no because I don't want to break the seal.
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#3215067 - 12/12/13 11:29 PM Re: Drain Filter If I Reuse It? [Re: JerryBob]
GMBoy Offline


Registered: 11/22/04
Posts: 6788
Loc: Texas
New filter every oil change for me. This is like the guys who pull spark plugs to look them and reinstall. The labor to remove means new part put back on for me be it an oil filter or spark plug.

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#3215070 - 12/12/13 11:42 PM Re: Drain Filter If I Reuse It? [Re: Rolla07]
demarpaint Offline


Registered: 07/03/05
Posts: 22934
Loc: NY
Originally Posted By: Rolla07
A new filter every 7500 miles is not exactly wasteful. Id rather have clean oil and a new filter than worry about the negligable increase in efficiency of reusing an old one.


That's the way I feel. Some filters hold close to a qt. of oil like my E-150. That's almost 1 qt. of dirty oil mixing with the oil that doesn't come out of the engine because of the design. That could be 20% or more of dirty oil mixing in with fresh clean oil as soon as I turn the key. I'd rather just change the oil and the filter and call it a day. Obviously opinions vary, that's mine FWIW.
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#3215092 - 12/13/13 12:56 AM Re: Drain Filter If I Reuse It? [Re: y_p_w]
ZeeOSix Offline


Registered: 07/22/10
Posts: 8917
Loc: PNW
Originally Posted By: y_p_w
Originally Posted By: raytseng
don't unscrew. You're more likely to mess something up with the seal.

There's also more than another 1/4quart of oil hiding around in the other galleys and parts of your engine.

Plus, if the oil is so "bad" then you've already been using "bad" oil in your car for the last portion of your interval. You should be changing the oil before it gets that bad.

1/4 quart? Usually more than that. My wife's Civic owners manual says a 4.4 quart total capacity with 3.2 quarts change w/o a new filter and 3.4 quarts change with a new filter. Apparently there's a lot of space in that engine for the oil to hide, even with a tiny overall capacity.


That's a 0.2 qt delta, which is essentially 1/4 quart. grin

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