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Determining Severe Oil Service #4753471
05/10/18 08:40 PM
05/10/18 08:40 PM
Joined: Jul 2008
Posts: 6
Ohio
CincyFritz Offline OP
CincyFritz  Offline OP
Joined: Jul 2008
Posts: 6
Ohio
Have a Subaru Legacy 2.5l and have 1500 miles on it in 3 months. Would you change oil per the Severe service due to low mileage/short trip schedule? It is driven 8 miles to work weekly (Mo-Fr)one way, some interstate and mostly side streets. The dealer says just do 6months/6000miles (WECF). What do YOU think? Thanks for your comments in advance. I want to use QSUD 0W-20 especially since the base oil is GTL like Pennzoil Pure Plua. Any comments welcome.

Regards,
Fred Demmer
Cincinnati, USA


Fred Demmer
Cincinnati Ohio USA
03 VW Jetta GLS TDI
5W40 Shell Rotella T
Re: Determining Severe Oil Service [Re: CincyFritz] #4753483
05/10/18 08:48 PM
05/10/18 08:48 PM
Joined: Oct 2009
Posts: 3,353
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,353
Wet side WA
Its still under warranty you stick with the warranty requirements.


2004 Corolla 125425
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74277
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 74705 4-22-18
Re: Determining Severe Oil Service [Re: CincyFritz] #4753489
05/10/18 08:51 PM
05/10/18 08:51 PM
Joined: Sep 2015
Posts: 5,955
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,955
Kalifornia Kollective
Maybe I'd consider it severe in the cold weather ... But it's warming up nicely and that engine has port injection if older model, so it runs relatively cleanly. Yeah, I know Subies are known to fuel the oil some, but not unless your pushing a lot of turbo boost and beating on it, or it's a Direct Injection engine ...

QSUD will go the distance. I'd just do every 6 months.

You could pull a sample and send it in at shorter time to double check. Then you'd know for sure smile

Last edited by BrocLuno; 05/10/18 08:53 PM.

Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Determining Severe Oil Service [Re: CincyFritz] #4753496
05/10/18 08:58 PM
05/10/18 08:58 PM
Joined: Sep 2010
Posts: 7,084
Texas
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 7,084
Texas
Dealer is OK several brands have good base oil in that grade

Re: Determining Severe Oil Service [Re: CincyFritz] #4753497
05/10/18 08:58 PM
05/10/18 08:58 PM
Joined: Dec 2016
Posts: 6,484
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,484
Waco, TX
Originally Posted By: BrocLuno

QSUD will go the distance. I'd just do every 6 months.

You could pull a sample and send it in at shorter time to double check. Then you'd know for sure smile


I agree with this.

Or just run 5W-40 Shell Rotella T in everything.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Determining Severe Oil Service [Re: CincyFritz] #4753535
05/10/18 09:33 PM
05/10/18 09:33 PM
Joined: Jul 2005
Posts: 30,635
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,635
NY
That type of driving constitutes severe service driving. I'd follow the owners manual for severe service maintenance.


God Bless Our Troops

Re: Determining Severe Oil Service [Re: CincyFritz] #4753561
05/10/18 09:57 PM
05/10/18 09:57 PM
Joined: Nov 2011
Posts: 4,903
MTL, CANADA
Rolla07 Online content
Rolla07  Online Content
Joined: Nov 2011
Posts: 4,903
MTL, CANADA
6 months would be 3000 miles so id go with every 6 months.


2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967

Re: Determining Severe Oil Service [Re: Linctex] #4753565
05/10/18 10:00 PM
05/10/18 10:00 PM
Joined: Dec 2017
Posts: 2,529
SE British Columbia, Canada
Snagglefoot Online content
Snagglefoot  Online Content
Joined: Dec 2017
Posts: 2,529
SE British Columbia, Canada
Originally Posted By: Linctex
Originally Posted By: BrocLuno

QSUD will go the distance. I'd just do every 6 months.

You could pull a sample and send it in at shorter time to double check. Then you'd know for sure smile


I agree with this.

Or just run 5W-40 Shell Rotella T in everything.



Do you mean Rotella T3, or some other Rotella product. I think Rotella T is phased out.


If you want the job done right......do it yourself.
Re: Determining Severe Oil Service [Re: CincyFritz] #4753626
05/10/18 11:21 PM
05/10/18 11:21 PM
Joined: Sep 2015
Posts: 5,955
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,955
Kalifornia Kollective
Prolly meaning T6 ... But may not really be appropriate for this engine depending on which exact model it is ...


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Determining Severe Oil Service [Re: CincyFritz] #4753646
05/11/18 12:16 AM
05/11/18 12:16 AM
Joined: Dec 2017
Posts: 1,166
US
JLTD Offline
JLTD  Offline
Joined: Dec 2017
Posts: 1,166
US
UOA! UOA! UOA!

It's the only way to be certain.


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

Using AMSOIL

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

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

Re: Determining Severe Oil Service [Re: CincyFritz] #4753754
05/11/18 05:52 AM
05/11/18 05:52 AM
Joined: May 2013
Posts: 2,094
Saskatchewan, Canada
Johnny2Bad Offline
Johnny2Bad  Offline
Joined: May 2013
Posts: 2,094
Saskatchewan, Canada
8 miles daily on pavement with some high speed sections is not severe service; it's near ideal, actually.

"Severe Service" is towing, travel on dusty roads with opposing traffic (that's where you eat the dust), and numerous trips where the coolant and lubricants do not meet operating temperatures. You have none of those conditions.


'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: Determining Severe Oil Service [Re: Johnny2Bad] #4753766
05/11/18 06:11 AM
05/11/18 06:11 AM
Joined: Jul 2005
Posts: 30,635
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,635
NY
Originally Posted By: Johnny2Bad
8 miles daily on pavement with some high speed sections is not severe service; it's near ideal, actually.

"Severe Service" is towing, travel on dusty roads with opposing traffic (that's where you eat the dust), and numerous trips where the coolant and lubricants do not meet operating temperatures. You have none of those conditions.

Severe service is also short hopping where the oil isn't getting to operating temps long enough to burn off excess fuel and moisture. I doubt the oil is getting hot enough long enough to burn off condensation, especially during the winter months. I'd follow severe service or at least pony up for a UOA to eliminate some of the guess work.


God Bless Our Troops

Re: Determining Severe Oil Service [Re: demarpaint] #4753791
05/11/18 06:41 AM
05/11/18 06:41 AM
Joined: Jun 2003
Posts: 517
LA (Lower Alabama)
doyall Offline
doyall  Offline
Joined: Jun 2003
Posts: 517
LA (Lower Alabama)
Originally Posted By: demarpaint
Severe service is also short hopping where the oil isn't getting to operating temps long enough to burn off excess fuel and moisture. I doubt the oil is getting hot enough long enough to burn off condensation, especially during the winter months. I'd follow severe service or at least pony up for a UOA to eliminate some of the guess work.


This. And if you do a UOA, get it somewhere that does gas chromatography fuel dilution testing.

Re: Determining Severe Oil Service [Re: CincyFritz] #4753896
05/11/18 08:28 AM
05/11/18 08:28 AM
Joined: Mar 2012
Posts: 735
WA
Brigadier Offline
Brigadier  Offline
Joined: Mar 2012
Posts: 735
WA
A mechanic at the shop I take my cars too said that 'Western Washington is severe service'. So driving over here is sever service....


2017 Hyundai Santa Fe SE, 3.3L, AWD, QSUD 5w30, OEM filter, LiquiMoly MoS2, E-0 92 octane

https://www.pure-gas.org/ << Wake up your engine!!

Where the stars and stripes and the eagle fly
Re: Determining Severe Oil Service [Re: CincyFritz] #4753917
05/11/18 08:47 AM
05/11/18 08:47 AM
Joined: Oct 2014
Posts: 12,053
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 12,053
Idaho
Oil is oil. Look at the ratings and when in doubt change it out. Follow the owners manual there is no voodoo needed.


2015 Ford F150 2.7
2018 Ford F350 6.2
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