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#4727940 - 04/15/18 03:52 PM Oil level & time to change
Donald Offline


Registered: 03/21/04
Posts: 20242
Loc: Upstate NY
So if you are a 1/2 QT low on oil and 1000 miles from oil change would you add oil or change oil early? How about 1 QT low and/or 500 miles from oil change?
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


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#4727949 - 04/15/18 04:00 PM Re: Oil level & time to change [Re: Donald]
JohnnyJohnson Offline


Registered: 10/22/09
Posts: 2381
Loc: Wet side WA
Just a half a quart and 1K to go top off! Lots of people I've seen post on here would be thrilled with that little oil consumption. Oh by the way what is your OIC goal and which of your sig cars is this on.
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#4727956 - 04/15/18 04:03 PM Re: Oil level & time to change [Re: Donald]
Donald Offline


Registered: 03/21/04
Posts: 20242
Loc: Upstate NY
The Subaru go 6k and hopefully no make up oil. The pickup is very different.


Edited by Donald (04/15/18 04:04 PM)
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2015 Ford F250 w/Powerstroke
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#4727957 - 04/15/18 04:04 PM Re: Oil level & time to change [Re: Donald]
TheLawnRanger Offline


Registered: 03/18/18
Posts: 114
Loc: Mississippi
Top off. Many people never check their oil and would never know the difference with that small amount. No need to change it.
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#4727974 - 04/15/18 04:29 PM Re: Oil level & time to change [Re: Donald]
dlundblad Online   happy


Registered: 09/30/13
Posts: 9659
Loc: Indiana
Top off

Use a cheap 15w40 if you’re worried about price.
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#4727976 - 04/15/18 04:30 PM Re: Oil level & time to change [Re: Donald]
rooflessVW Online   content


Registered: 12/24/11
Posts: 3665
Loc: North Carolina
1/2 quart low... Is that below "full?"

If so, I'd let it ride. Add at the "add" line.
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#4727982 - 04/15/18 04:35 PM Re: Oil level & time to change [Re: Donald]
demarpaint Offline


Registered: 07/03/05
Posts: 29395
Loc: NY
I'd top it up.
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#4727996 - 04/15/18 04:41 PM Re: Oil level & time to change [Re: Donald]
SubieRubyRoo Online   content


Registered: 05/14/12
Posts: 867
Loc: Winchester, Indiana
There are two schools of thought. After you fill on the new OCI and get the level to the "full" mark of the dipstick, at any point in the OCI you check and it's below the initial point you filled it to, you can:

1. Top it off if that's what makes you feel good.
2. Let it go until you get to the lower end of the marks that say "Add oil".

Reason being, the level on the dipstick can fluctuate from temperature, if the oil is still in the top end of the engine, etc etc etc, and the defining call to action is when the level is at the lowest end of the marks. Whatever makes you feel good is what you should do, because neither method will make a difference to your engine.

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#4727997 - 04/15/18 04:42 PM Re: Oil level & time to change [Re: Donald]
NormanBuntz Offline


Registered: 07/27/13
Posts: 2018
Loc: Outer Banks, NC
I'd never be a quart low, but with half a quart low, top off.
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#4728055 - 04/15/18 05:36 PM Re: Oil level & time to change [Re: Donald]
fdcg27 Offline


Registered: 09/25/09
Posts: 15433
Loc: OH
Leave it alone unless you really want to waste a half a quart of oil.
Engines use at least some oil by design and the dipstick is marked with a safe range.
If the oil is to be drained in a mere 1K, there is really no point in adding half a quart of make-up oil
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#4728067 - 04/15/18 05:43 PM Re: Oil level & time to change [Re: Donald]
oilpsi2high Offline


Registered: 12/18/14
Posts: 1239
Loc: NY, USA, etc.
I'd always add oil to keep it within proper spec. It's foolish to do otherwise unless you're literally driving home and changing the oil anyway.

Even if I was doing the oil a week later I'd still top it off.


Edited by oilpsi2high (04/15/18 05:43 PM)

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#4728069 - 04/15/18 05:43 PM Re: Oil level & time to change [Re: Donald]
raytseng Offline


Registered: 12/11/08
Posts: 2288
Loc: CA
If you are frugal, top it off to halfway so you will still be in the middle in 500 or 1000 miles.
If you know your oil consumption you can plan for this better. e.g. by topping off at oci halfway point if you only need 1 topoff per oci, or in thirds if you need 2 topoffs per oci.


Edited by raytseng (04/15/18 05:45 PM)

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#4728084 - 04/15/18 05:57 PM Re: Oil level & time to change [Re: Donald]
bubbatime Offline


Registered: 03/18/08
Posts: 5456
Loc: South Florida
I keep the oil at the full line. Always. What if the car goes a while between checks? What if the car does a few thousand miles before you have the opportunity to check it again? If you always top off the oil when you check it to make sure that its full, it will never get below add.

I do my mother in laws oil changes. It could be a month or two before I see the car again. I always top if off when I check it.
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#4728091 - 04/15/18 06:10 PM Re: Oil level & time to change [Re: Donald]
CR94 Offline


Registered: 03/20/16
Posts: 974
Loc: Western S.C. since 1996
Too many details missing to give a logical answer, including the rate of consumption, planned change interval, value of the vehicle, etc.
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2011 Toyota Prius now at 87K
1981 Mazda GLC (323) retired at 606K
1972 Subaru DL retired at 190K
1954 Chevrolet retired at 121K

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#4728123 - 04/15/18 06:39 PM Re: Oil level & time to change [Re: Donald]
Nick1994 Offline


Registered: 02/19/13
Posts: 9825
Loc: Phoenix, AZ
1/2 quart low is no problem. It isn't at the add line yet. Run it out another 1k miles.
_________________________
2015 Hyundai Sonata 2.4L 76k PU 5w30 & OEM
2000 Toyota Camry 2.2L 227k M1 AFE 0w30 & Wix
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