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0w20 oil to reduce engine noise in a Subaru OB? #4564899
11/05/17 02:26 PM
11/05/17 02:26 PM
Joined: Dec 2004
Posts: 2,180
Lexington, KY
Russell Offline OP
Russell  Offline OP
Joined: Dec 2004
Posts: 2,180
Lexington, KY
I am looking for a 0W20 synthetic oil for my 2017 Subaru Outback 2.5.that will help reduce engine noise while the engine is cold or warm.


Russell Casey
1995 BMW 525i M50TU 2.5L-6, abt 239K miles. Rebuilt trany.
2017 Subaru Outback Limited 2.5l with Eyesight, 11,000 miles
Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell] #4564915
11/05/17 02:39 PM
11/05/17 02:39 PM
Joined: Jun 2017
Posts: 548
DFW
JustN89 Offline
JustN89  Offline
Joined: Jun 2017
Posts: 548
DFW
Well, first things first, you won't find a concrete answer. There are a few oils that are held in high regards when it comes to volume, but very little evidence to support them actually being quieter than other brands.

That said, here are a few of those "quieter" oils (in my opinion):

QS Ultimate Durability (API SN)
PPPP/PUPPP (API SN)
Castrol Edge (API SN)
Amsoil
Redline
etc.

The common thread with those oils is a higher moly/boron composition than "average". If I were in your shoes, I'd try any of those that have your required approvals/certifications until you found one that you like.

Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell] #4564917
11/05/17 02:40 PM
11/05/17 02:40 PM
Joined: Feb 2012
Posts: 3,870
NEUS
Bandito440 Offline
Bandito440  Offline
Joined: Feb 2012
Posts: 3,870
NEUS
I had the same engine in my Forester. You won’t find a -20 that will make a difference.

Your choices are using something heavier and risking warranty problems, or ignoring a bit of noise.

Mobil 1 0w-40 or Rotella T6 5w-40 will quiet things down, but they’re heavier than you’re looking for.


'14 Grand Cherokee EcoDiesel
Rotella T6 5w-40 & OEM filter
Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell] #4564918
11/05/17 02:41 PM
11/05/17 02:41 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline
OneEyeJack  Offline
Joined: Sep 2010
Posts: 7,485
S California
What is the noise? What do you expect an engine oil to do to reduce this noise? Your efforts might be better spent somewhere else.

Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell] #4564945
11/05/17 02:57 PM
11/05/17 02:57 PM
Joined: Sep 2005
Posts: 5,664
MIchigan
Warstud Offline
Warstud  Offline
Joined: Sep 2005
Posts: 5,664
MIchigan
Try Castrol Magnatec

Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Warstud] #4564959
11/05/17 03:09 PM
11/05/17 03:09 PM
Joined: Jun 2017
Posts: 548
DFW
JustN89 Offline
JustN89  Offline
Joined: Jun 2017
Posts: 548
DFW
Originally Posted By: Warstud
Try Castrol Magnatec

I knew I was forgetting one. This is another common "quiet" oil.

Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell] #4564965
11/05/17 03:16 PM
11/05/17 03:16 PM
Joined: Nov 2012
Posts: 249
Ajax,Ontario, Canada
Pelican Offline
Pelican  Offline
Joined: Nov 2012
Posts: 249
Ajax,Ontario, Canada
Originally Posted By: Russell
I am looking for a 0W20 synthetic oil for my 2017 Subaru Outback 2.5.that will help reduce engine noise while the engine is cold or warm.


Check in the owner's manual and if it shows I'd go for a 5W20 or 0W30 or 5W30. In my MB which called for 0W40 I used 5W40 as the former was a bit too noisy for my liking upon start-up, this solved the problem.

Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell] #4565028
11/05/17 04:36 PM
11/05/17 04:36 PM
Joined: Dec 2008
Posts: 3,079
Occupied Virginia
Bottom_Feeder Offline
Bottom_Feeder  Offline
Joined: Dec 2008
Posts: 3,079
Occupied Virginia
What have you tried in it so far that has been 'noisy'?

In my Accord that also specs 0w20, I've used Mobil 1 EP, then Pennzoil Platinum, then Mobil 1 AFE, and the AFE is what I've kept using since it has made the valvetrain seem noticeably quieter on cold starts. Not a huge difference but there is one. As was suggested above, Castrol Magnatec is next.

Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: JustN89] #4565037
11/05/17 04:43 PM
11/05/17 04:43 PM
Joined: May 2017
Posts: 681
TX
parshisa Offline
parshisa  Offline
Joined: May 2017
Posts: 681
TX
so basically all the oils are quieter but Mobil 1? lol


2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30
Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: JustN89] #4565038
11/05/17 04:48 PM
11/05/17 04:48 PM
Joined: Sep 2010
Posts: 6,990
Texas
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 6,990
Texas
PUP was the loudest in my Cruze and tied for last in my 3.5L ecoboost … Iused a digital dB meter …

Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Bandito440] #4565039
11/05/17 04:49 PM
11/05/17 04:49 PM
Joined: Sep 2010
Posts: 6,990
Texas
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 6,990
Texas
Or 30

Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: parshisa] #4565043
11/05/17 04:56 PM
11/05/17 04:56 PM
Joined: Oct 2009
Posts: 3,214
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,214
Wet side WA
Originally Posted By: parshisa
so basically all the oils are quieter but Mobil 1? lol


I switch back and forth between oils I've used Mobil 1 in my Toyota Corolla and you certainly couldn't prove it my me.


2004 Corolla 124770
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: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell] #4565048
11/05/17 04:59 PM
11/05/17 04:59 PM
Joined: Nov 2011
Posts: 3,948
Lima, Ohio, USA
earlyre Online sleepy
earlyre  Online Sleepy
Joined: Nov 2011
Posts: 3,948
Lima, Ohio, USA
I know the 3400 in my sister's 05 impala was a tad on the noisy side all summer, (she bought it at the beginning of summer, and it had just been serviced at the local garage they normally use, not sure what oil he uses, but always uses carquest red filters, and before that it was always the local Chevy dealer)

I did an oil change on it a week ago, with the specified 4 qts of Dexos1 5w30 (AutoQuest - Meijer/Warren) ,and an XG3387.

She came down for a visit yesterday, and it was much quieter. almost unnoticeable.

forgot to check the oil level before starting the OC to see how low it was...


Mine:
09 Mercury Sable : 6qts AutoQuest(Meijer/Warren) 0w20, WIX 51516
Mine to Maintain:
03 Pontiac Vibe : 4.5qts VWB 5w30,WIX 51394
Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell] #4565079
11/05/17 05:23 PM
11/05/17 05:23 PM
Joined: Mar 2017
Posts: 5,411
Soviet State of Washington
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 5,411
Soviet State of Washington
Is the noise due to a high pressure fuel pump?


2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter

Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell] #4565105
11/05/17 05:54 PM
11/05/17 05:54 PM
Joined: Sep 2009
Posts: 16,008
OH
fdcg27 Online content
fdcg27  Online Content
Joined: Sep 2009
Posts: 16,008
OH
I just put M1 AFE in our newer Forester, which has the same engine.
Seems reasonably quiet.
A little noise on engine start is part of what makes a Subaru a Subaru.
The '17 sounds almost exactly like the '09, which is a little scary since these have entirely different engines that just happen to share the same nominal displacement.


17 Forester 12K MSS 0W-20
12 Accord LX 92K PP 5W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i
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