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#4439395 - 06/23/17 11:49 AM Oil Change interval-mileage versus months?
frule Offline


Registered: 06/07/02
Posts: 24
Loc: Southeast
My wife has a 2015 Subaru Forester (naturally aspirated, 4-cyl) that is driven only 4,500 to 5,000 miles per year. But it's driven at least 2x a week where the trip is 15 miles highway.

Subaru now specifies oil and filter (full synthetic) twice a year. Is this overkill (every 2500 miles for full synth oil + filter). It is out of warranty.

Thanks!

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#4439398 - 06/23/17 11:55 AM Re: Oil Change interval-mileage versus months? [Re: frule]
TiredTrucker Offline


Registered: 01/04/08
Posts: 3225
Loc: Central Iowa
I don't have that vehicle, but my situation is similar. I change oil annually.
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#4439399 - 06/23/17 11:56 AM Re: Oil Change interval-mileage versus months? [Re: frule]
JayhawkRoy Offline


Registered: 09/12/04
Posts: 1017
Loc: Basehor, KS
Out of warranty, I would go with once a year oil changes. I have two lightly driven trucks where I do this and the oldest has lasted only 21 years so far. You can always adjust if the usage goes up.

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#4439400 - 06/23/17 11:59 AM Re: Oil Change interval-mileage versus months? [Re: frule]
TheOilWizard Offline


Registered: 06/02/16
Posts: 105
Loc: US
Run the oil for 8-9 months and perform a UOA. Then use that data to make a decision on whether 1 year is feasible.

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#4439404 - 06/23/17 12:04 PM Re: Oil Change interval-mileage versus months? [Re: frule]
rooflessVW Offline


Registered: 12/24/11
Posts: 4018
Loc: North Carolina
Annual oil changes sounds about right.

Perhaps even bi-annual changes would be feasible with the right oil. Think Castrol EP or similar.
_________________________
"Zed's dead baby, Zed's dead."

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#4439411 - 06/23/17 12:11 PM Re: Oil Change interval-mileage versus months? [Re: frule]
WobblyElvis Offline


Registered: 09/23/14
Posts: 1341
Loc: Toronto Canada
If you go for extended oil changes, do not neglect checking the oil level on a regular basis. Other than that, a yearly oil change is probably the right thing to do.

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#4439425 - 06/23/17 12:22 PM Re: Oil Change interval-mileage versus months? [Re: frule]
NormanBuntz Offline


Registered: 07/27/13
Posts: 2120
Loc: Outer Banks, NC
In your case, out of warranty translates to annual changes with synthetic. I recently traded my 2015 Outback.
_________________________
2017 Honda Odyssey SE, 14K
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2007 Honda Ridgeline RTS, 86K
2007 Infiniti M35, 104K

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#4439439 - 06/23/17 12:33 PM Re: Oil Change interval-mileage versus months? [Re: frule]
CT8 Offline


Registered: 10/09/14
Posts: 10920
Loc: Idaho
Out of warranty already?
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#4439509 - 06/23/17 01:39 PM Re: Oil Change interval-mileage versus months? [Re: frule]
benjy Offline


Registered: 08/23/10
Posts: 865
Loc: pa
short trips can kill the oil especially in colder weather, it takes a good half hr drive to dry it out! you DO NOT need to have the dealer $$$$ do oil changes to protect your warranty!!! use spec oil + a good filter like wix aka napa gold + keep receipts + records. i change the oil in my aunts jeep every 6 months with pennzoil platinum usually less than 2,000 miles. many short trips to local stores, but oil is cheap if you intend to keep your ride a while, an independent can do your services as well prolly half the stealer cost

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#4439514 - 06/23/17 01:43 PM Re: Oil Change interval-mileage versus months? [Re: CT8]
frule Offline


Registered: 06/07/02
Posts: 24
Loc: Southeast
Will be by next oil change. Bought in 2014.

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#4439515 - 06/23/17 01:43 PM Re: Oil Change interval-mileage versus months? [Re: benjy]
Malo83 Offline


Registered: 08/08/08
Posts: 1999
Loc: Cali
5K or twice a year is my interval regardless.

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#4439550 - 06/23/17 02:12 PM Re: Oil Change interval-mileage versus months? [Re: frule]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2548
Loc: MN
Subaru went to frequent oil changes when they realized:

(a) Doesn't cost them anything to recommend 6 month oil changes.
(b) It can prevent the notorious Subaru high oil consumption from killing an engine if they come in for an oil change.
(c) They can use lack of frequent oil changes as a way to deny engine warranty claims.

There is no downside in Subaru's view to frequent oil changes.
If you're not sure, just put in Mobil1 Extended Protection or Castrol Edge Extended Protection, with a Fram Ultra oil filter, check the oil level once a month, and leave it in for 1 year.

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#4439582 - 06/23/17 02:54 PM Re: Oil Change interval-mileage versus months? [Re: frule]
Jimzz Offline


Registered: 10/03/14
Posts: 1137
Loc: NoVA
I agree with most. Use a synthetic oil and change once a year. Just check the oil level every month or 1000miles, which ever comes first.
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yup

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#4439640 - 06/23/17 04:03 PM Re: Oil Change interval-mileage versus months? [Re: Malo83]
SilverSnake Offline


Registered: 05/29/13
Posts: 590
Loc: Florida
Originally Posted By: Malo83
5K or twice a year is my interval regardless.


This is exactly what I do for all my vehicles. Always works out to less than 5K by the time six months rolls around.
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2016 Charger, 6.4L-485 HP (PUP 0W-40)
2017 BMW 330i, 2L-248 HP (BMW 0W-20)
2018 Jeep GC, 5.7L-360 HP (PUP 5W-20)
2008 20KW Generac (Amsoil 10W-30/30)

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#4439746 - 06/23/17 06:28 PM Re: Oil Change interval-mileage versus months? [Re: frule]
WillsYoda Offline


Registered: 10/17/15
Posts: 471
Loc: MN
1 year easy.

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