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Will used oil sludge up...... #4692564
03/12/18 03:28 PM
03/12/18 03:28 PM
Joined: Jan 2010
Posts: 124
ca
monster1 Offline OP
monster1  Offline OP
Joined: Jan 2010
Posts: 124
ca
Sitting for months in the collection container? I drained the oil on our 13 Altima today. I noticed that the residue sitting in the bottom of the collection pan was sludged up from the last oil change. The collection pan has been sitting in my garage. I've noticed the same in my mityvac that I use in my jeep and boat. I'm hoping this is happening in the collection containers, not my engines. All engines get changed on regular schedules.

Re: Will used oil sludge up...... [Re: monster1] #4692581
03/12/18 03:45 PM
03/12/18 03:45 PM
Joined: Jun 2014
Posts: 1,773
Ca.
UncleDave Offline
UncleDave  Offline
Joined: Jun 2014
Posts: 1,773
Ca.
I've never had it sludge up or thicken beyond how it came out temperature effecting viscosity notwithstanding. But I keep it in sealed containers.

but Iv seen particles fall from suspension and gather at the bottom of container creating a denser layer of detritus. - unless thats what you are calling " sludge".

A centrifuge spins it out quick, but left still long enough heavier particles drop.

UD

Last edited by UncleDave; 03/12/18 04:03 PM.

Uncle Dave
Cat 3126/2 MB3500/Titan/RX400H/17 Ridgeline
700HP V10/ 725HP BBC/ Raptor 700/ KFX450/ YZ250/Onan 8K/ Cat3011C
Re: Will used oil sludge up...... [Re: monster1] #4692591
03/12/18 04:02 PM
03/12/18 04:02 PM
Joined: Sep 2015
Posts: 5,858
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,858
Kalifornia Kollective
Used oil sitting in a pan is not the same as in a engine. There is plenty free air and water vapor in the garage, and not much in an engine. they're essentially low pressure sealed units (value of the PCV valve spring).


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Will used oil sludge up...... [Re: BrocLuno] #4692606
03/12/18 04:15 PM
03/12/18 04:15 PM
Joined: Dec 2017
Posts: 1,037
US
JLTD Offline
JLTD  Offline
Joined: Dec 2017
Posts: 1,037
US
Originally Posted By: BrocLuno
Used oil sitting in a pan is not the same as in a engine. There is plenty free air and water vapor in the garage, and not much in an engine. they're essentially low pressure sealed units (value of the PCV valve spring).


Yep, I've seen oil laying in my pan (far too long) that has gotten a brownish tinge to it from absorbing moisture.


I'm a thickie; but a 20 has its place.

I use AMSOIL

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

His: 2015 4Runner 41k, OE 5w20/Wix

Re: Will used oil sludge up...... [Re: JLTD] #4692774
03/12/18 06:54 PM
03/12/18 06:54 PM
Joined: Oct 2012
Posts: 4,614
Taiwan
Ducked Offline
Ducked  Offline
Joined: Oct 2012
Posts: 4,614
Taiwan
Originally Posted By: JLTD
Originally Posted By: BrocLuno
Used oil sitting in a pan is not the same as in a engine. There is plenty free air and water vapor in the garage, and not much in an engine. they're essentially low pressure sealed units (value of the PCV valve spring).


Yep, I've seen oil laying in my pan (far too long) that has gotten a brownish tinge to it from absorbing moisture.


Moisture (as in water vapour) isn't brown. Not even in China. If it went brown it either got dirt in it or it oxidised.

Re: Will used oil sludge up...... [Re: monster1] #4692831
03/12/18 07:29 PM
03/12/18 07:29 PM
Joined: Dec 2017
Posts: 1,037
US
JLTD Offline
JLTD  Offline
Joined: Dec 2017
Posts: 1,037
US
The brown I am writing about is the same milky color you get when you have coolant in the oil...a very light brown....


I'm a thickie; but a 20 has its place.

I use AMSOIL

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

His: 2015 4Runner 41k, OE 5w20/Wix

Re: Will used oil sludge up...... [Re: UncleDave] #4692881
03/12/18 08:09 PM
03/12/18 08:09 PM
Joined: Jun 2002
Posts: 19,235
Iowegia - USA
MolaKule Offline
MolaKule  Offline
Joined: Jun 2002
Posts: 19,235
Iowegia - USA
Originally Posted By: UncleDave


...but Iv seen particles fall from suspension and gather at the bottom of container creating a denser layer of detritus. - unless thats what you are calling " sludge"...




thumbsup

Last edited by MolaKule; 03/12/18 08:10 PM.

Reading is fundamental; understanding is not a given ability.
Re: Will used oil sludge up...... [Re: JLTD] #4693110
03/13/18 04:56 AM
03/13/18 04:56 AM
Joined: Oct 2012
Posts: 4,614
Taiwan
Ducked Offline
Ducked  Offline
Joined: Oct 2012
Posts: 4,614
Taiwan
Originally Posted By: JLTD
The brown I am writing about is the same milky color you get when you have coolant in the oil...a very light brown....


Like I said. Coolant has reactive chemicals in it so it isn't comparable to moisture absorbed from the air.

Re: Will used oil sludge up...... [Re: Ducked] #4693165
03/13/18 07:53 AM
03/13/18 07:53 AM
Joined: Dec 2017
Posts: 1,037
US
JLTD Offline
JLTD  Offline
Joined: Dec 2017
Posts: 1,037
US
Originally Posted By: Ducked
Originally Posted By: JLTD
The brown I am writing about is the same milky color you get when you have coolant in the oil...a very light brown....


Like I said. Coolant has reactive chemicals in it so it isn't comparable to moisture absorbed from the air.


Ok.


I'm a thickie; but a 20 has its place.

I use AMSOIL

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

His: 2015 4Runner 41k, OE 5w20/Wix

Re: Will used oil sludge up...... [Re: MolaKule] #4693204
03/13/18 08:54 AM
03/13/18 08:54 AM
Joined: Jan 2010
Posts: 124
ca
monster1 Offline OP
monster1  Offline OP
Joined: Jan 2010
Posts: 124
ca


"but Iv seen particles fall fromsuspension and gather at the bottom of container creating a denser layer of detritus.- unless thats what you are calling " sludge"...




That may be what I'm looking at. The thinner oil drained out of the collection pan and in the bottom was noticably thicker oil. Think the consistency of room temp chicken grease.

Last edited by monster1; 03/13/18 08:57 AM.
Re: Will used oil sludge up...... [Re: monster1] #4693345
03/13/18 11:30 AM
03/13/18 11:30 AM
Joined: Jun 2005
Posts: 3,435
Massachusetts
deven Offline
deven  Offline
Joined: Jun 2005
Posts: 3,435
Massachusetts
^^Yup particle separation!


Proud user of ROYAL PURPLE products!

2016 Acura RLX Sports Hybrid(Royal Purple HPS 5w30 + M1-110 oil filter)

KEEP IT SIMPLE STUPID. IT'S ONLY OIL
Re: Will used oil sludge up...... [Re: monster1] #4693445
03/13/18 12:57 PM
03/13/18 12:57 PM
Joined: Oct 2015
Posts: 2,655
Balearic Islands , Spain
FordCapriDriver Offline
FordCapriDriver  Offline
Joined: Oct 2015
Posts: 2,655
Balearic Islands , Spain
I have previously in my Peugeot had milky white stuff on my oil cap after sitting for a few weeks out in the street, particularly cold and rainy weeks, but it didn't have a blown head gasket like i thought at first, it was just some water that had condensated inside the engine.


1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO.

1988 Ford Escort Mk4 Xr3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50.

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