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#4546527 - 10/17/17 07:02 PM Is oil really THAT important?
camrydriver111 Offline


Registered: 07/01/14
Posts: 1511
Loc: Canada
In the grand scheme of automotive maintenance is oil really that important? As long as you change your oil in a reasonable time does it really matter what oil you use and what interval?

Does it matter if you use the best Group 4 oil with the lowest NOACK and a Fram Ultra versus using any approved oil? Will I see real world benefits like engine running better after 100k miles?

I was reading a few posts here and it seems like our cars are falling apart. Cars are rusting out, oil is leaking out of every gasket on the engine, rubber hoses all cracked, factory original suspension at 200k miles and 10 years, people exploding their timing belts, etc. Are we misplacing our time and effort in focusing on motor oils?
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#4546530 - 10/17/17 07:03 PM Re: Is oil really THAT important? [Re: camrydriver111]
Nick1994 Offline


Registered: 02/19/13
Posts: 10322
Loc: Phoenix, AZ
IMO, nope.

Which is why I use clearance quality oils and change it at reasonable intervals.
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2015 Hyundai Sonata 2.4L 81k Mobil 1 AFE 0w30 & OEM
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1996 Jeep Cherokee 4.0L 146k Mobil 1 HM 10w40 & Fram Ultra

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#4546535 - 10/17/17 07:07 PM Re: Is oil really THAT important? [Re: camrydriver111]
CT8 Offline


Registered: 10/09/14
Posts: 11245
Loc: Idaho
Oils that meet recommended specs are all good to go.Today's oils are that good.
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#4546542 - 10/17/17 07:10 PM Re: Is oil really THAT important? [Re: camrydriver111]
Kamele0N Offline


Registered: 02/09/15
Posts: 2106
Loc: Slovenia EU
What am I observing here on BITOG...is that many americans here are talking about sticky (piston) rings...
Honestly....we dont know/have that problems over the pond...

So my answer here would be YES it is important!

Seems that your ILSAC oils are not up to their job in comparison with our ACEA oils
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#4546544 - 10/17/17 07:11 PM Re: Is oil really THAT important? [Re: camrydriver111]
wemay Offline


Registered: 04/04/12
Posts: 9002
Loc: Southeast Florida
The more complicated engines become, the more oil specs/approvals play a part in the health of the engine. I'm sure you've seen a few of the various Dexos1 Gen2 threads.

KameleON - Yes, i'm sure there are no oil related issues, discussions, forums in your neck of the woods. None.
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#4546547 - 10/17/17 07:12 PM Re: Is oil really THAT important? [Re: Kamele0N]
CT8 Offline


Registered: 10/09/14
Posts: 11245
Loc: Idaho
Lots of people do not maintain the oil changed because the U.S oils aren't as additized as the longer life Euro graded oils.
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#4546556 - 10/17/17 07:20 PM Re: Is oil really THAT important? [Re: wemay]
Kamele0N Offline


Registered: 02/09/15
Posts: 2106
Loc: Slovenia EU
Originally Posted By: wemay


KameleON - Yes, i'm sure there are no oil related issues, discussions, forums in your neck of the woods. None.


I didnt say that! What I have said was that we dont know/have "sticky piston rings" discussions here...

Stop accusing me of something I did not say
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1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40

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#4546557 - 10/17/17 07:20 PM Re: Is oil really THAT important? [Re: camrydriver111]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
Is blood in your body really THAT important ?

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#4546566 - 10/17/17 07:27 PM Re: Is oil really THAT important? [Re: camrydriver111]
Kamele0N Offline


Registered: 02/09/15
Posts: 2106
Loc: Slovenia EU
And in fact...I have asked very the same question a month ago in generac oil topic...and it didnt get answered...

https://bobistheoilguy.com/forums/ubbthreads.php/topics/4509176/3

So maybe I will get proper answer here? smile
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2011 Hyundai i30 1.4 CVVT Shell Helix Ultra 5w40
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40

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#4546571 - 10/17/17 07:28 PM Re: Is oil really THAT important? [Re: Kamele0N]
bbhero Offline


Registered: 03/20/15
Posts: 4747
Loc: Virginia
I do think that the ACEA specs are better than the API SN, ILSAC GF-5 specs. The ACEA A3B4 spec does help with having very long run intervals. I like the ACEA A5 approval in combination with the Dexos specification.
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#4546581 - 10/17/17 07:35 PM Re: Is oil really THAT important? [Re: camrydriver111]
Kamele0N Offline


Registered: 02/09/15
Posts: 2106
Loc: Slovenia EU
I find our ACEA Ax oils far superior in comparison with their Cx (low saps) counerparts...

But when I am looking your UOA/VOAs here on BITOG...what I can see is that majority of your PCMOs look like ACEA C1-C2...regarding their TBN and ZDDP levels....and HTHS also

Your ILSAC oils look very weak in comparison with acea Ax/Bx oils...
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2011 Hyundai i30 1.4 CVVT Shell Helix Ultra 5w40
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40

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#4546586 - 10/17/17 07:39 PM Re: Is oil really THAT important? [Re: Kamele0N]
bigj_16 Offline


Registered: 07/03/17
Posts: 1291
Loc: Douglas County, Colorado
Originally Posted By: Kamele0N
Your ILSAC oils look very weak in comparison with acea Ax/Bx oils...


Yes, but they have a lot of heart smile

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#4546597 - 10/17/17 07:44 PM Re: Is oil really THAT important? [Re: camrydriver111]
Kamele0N Offline


Registered: 02/09/15
Posts: 2106
Loc: Slovenia EU
Please dont be too political in that topic...I want my answer here (from a month ago). smile
_________________________
2011 Hyundai i30 1.4 CVVT Shell Helix Ultra 5w40
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40

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#4546599 - 10/17/17 07:45 PM Re: Is oil really THAT important? [Re: Merkava_4]
ammolab Offline


Registered: 01/16/06
Posts: 1005
Loc: Ruidoso, NM USA
Originally Posted By: Merkava_4
Is blood in your body really THAT important ?


Can't be that important...I am running the same spec O Negative I was running in 1946.
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1994 Jeep Wrangler 2.5L
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#4546611 - 10/17/17 08:03 PM Re: Is oil really THAT important? [Re: camrydriver111]
PimTac Offline


Registered: 03/04/17
Posts: 4659
Loc: Soviet State of Washington
I agree that the European certifications are tougher than the US ones. In Europe, long intervals between oil changes are more the norm. Not everyone drives the autobahn but the same oils that run in the back country roads also run on the high speed motorways.
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