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#4564899 - 11/05/17 01:26 PM 0w20 oil to reduce engine noise in a Subaru OB?
Russell Offline


Registered: 12/04/04
Posts: 2180
Loc: 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

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#4564915 - 11/05/17 01:39 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell]
JustN89 Online   content


Registered: 06/27/17
Posts: 468
Loc: 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.

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#4564917 - 11/05/17 01:40 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell]
Bandito440 Offline


Registered: 02/13/12
Posts: 3854
Loc: 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

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#4564918 - 11/05/17 01:41 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell]
OneEyeJack Offline


Registered: 09/14/10
Posts: 7479
Loc: 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.

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#4564945 - 11/05/17 01:57 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell]
Warstud Offline


Registered: 09/02/05
Posts: 5393
Loc: MIchigan
Try Castrol Magnatec

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#4564959 - 11/05/17 02:09 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Warstud]
JustN89 Online   content


Registered: 06/27/17
Posts: 468
Loc: DFW
Originally Posted By: Warstud
Try Castrol Magnatec

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

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#4564965 - 11/05/17 02:16 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell]
Pelican Offline


Registered: 11/28/12
Posts: 150
Loc: 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.

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#4565028 - 11/05/17 03:36 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell]
Bottom_Feeder Online   content


Registered: 12/07/08
Posts: 3009
Loc: 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.

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#4565037 - 11/05/17 03:43 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: JustN89]
parshisa Offline


Registered: 05/21/17
Posts: 527
Loc: 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

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#4565038 - 11/05/17 03:48 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: JustN89]
4WD Offline


Registered: 09/21/10
Posts: 6366
Loc: Texas
PUP was the loudest in my Cruze and tied for last in my 3.5L ecoboost … Iused a digital dB meter …

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#4565039 - 11/05/17 03:49 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Bandito440]
4WD Offline


Registered: 09/21/10
Posts: 6366
Loc: Texas
Or 30

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#4565043 - 11/05/17 03:56 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: parshisa]
JohnnyJohnson Online   content


Registered: 10/22/09
Posts: 2739
Loc: 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 Toyota Corolla 121682
Out: QSUD 5W-30 Purolator One 5030
In: Valvoline ML 5w-30 TG4967 117530 2-8-18
2006 Duramax 74047
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73752 4-22-18

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#4565048 - 11/05/17 03:59 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell]
earlyre Offline


Registered: 11/22/11
Posts: 3858
Loc: 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

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#4565079 - 11/05/17 04:23 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell]
PimTac Online   content


Registered: 03/04/17
Posts: 4276
Loc: 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


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#4565105 - 11/05/17 04:54 PM Re: 0w20 oil to reduce engine noise in a Subaru OB? [Re: Russell]
fdcg27 Offline


Registered: 09/25/09
Posts: 15693
Loc: 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 86K 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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