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#3439744 - 07/29/14 05:05 PM GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3
gonefishing Offline


Registered: 10/28/11
Posts: 290
Loc: ND
This is the 2nd UOA for my 2014 GMC Sierra 1500 with the new 5.3 Ecotec3 V8. OLM was at 20%. Mostly highway driven (around 85%). Oil used is GM #19259487 (Dexos 0w20) which should be the same as ACDelco 10-9116. Filter was ACDelco PF63.

I did install a Volant CAI kit at the beginning of if this OCI. It uses a Donaldson PowerCore air filter. Looks like its working just fine.

Glad to see iron levels have dropped but copper is still up there. Maybe these engines just shed a lot of copper? Doesn't appear to be any fuel issues that are sometimes associated with DI.

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2014 GMC Sierra 1500 SLT All-Terrain 5.3 4x4

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#3439791 - 07/29/14 05:36 PM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: gonefishing]
Ram01 Offline


Registered: 10/13/10
Posts: 908
Loc: New York Queens
Wow not bad for a light 0w20 oil

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#3439860 - 07/29/14 06:21 PM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: gonefishing]
splinter Offline


Registered: 07/01/13
Posts: 1021
Loc: Newport Beach, CA
Nice results in a solid truck.

~20% OLM = 6000 miles in mine too.
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#3440702 - 07/30/14 02:37 PM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: gonefishing]
Oli20 Offline


Registered: 07/08/14
Posts: 32
Loc: Michigan
Very nice, are you planning on sticking with the GM Dexos or switching to something else when the free oil changes are up?
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2014 Silverado LTZ 5.3 3.42

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#3440816 - 07/30/14 04:08 PM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: gonefishing]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 17433
Loc: Sunny Florida
Great report. The copper will drop in time.

Does your truck have the factory oil cooler? If so, that can be a major copper contributor, they must also love copper sealant in these motors.

Note that we just sold a 6.0 gas engined GM Savana with half a million miles on the engine. The copper was high on that one when it was new, too...
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#3440844 - 07/30/14 04:40 PM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: Oli20]
gonefishing Offline


Registered: 10/28/11
Posts: 290
Loc: ND
Originally Posted By: Oli20
Very nice, are you planning on sticking with the GM Dexos or switching to something else when the free oil changes are up?


I decided to skip my last dealer oil change and do it myself. I put Mobil 1 0W-20 and a Fram Ultra XG10575 filter. Next UOA I will do TBN and plan on going down to around 10% OLM.

Originally Posted By: SteveSRT8

Does your truck have the factory oil cooler?


Yes it does. Spec sheet says "external engine oil cooler".
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2014 GMC Sierra 1500 SLT All-Terrain 5.3 4x4

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#3442696 - 08/01/14 10:33 AM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: gonefishing]
dnewton3 Offline



Registered: 05/14/07
Posts: 6367
Loc: Indianapolis, IN
Nice report.

Cu will settle with time; give it more to do so.

Easily could extend to the full 100% OLM, and probably longer (although I realize that's considered heresy ....)
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Conventionals vs. Synthetics isn't about which is "better"; it's about which lasts longer, while assuring safe operation, in relation to cost. Any product can be over or under utilized. The same applies to filters.
Make an informed decision; first consider your operating conditions, next determine your maintenance plan, and then pick your lube and filter. Don't do it the other way around ...

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#3443335 - 08/01/14 09:31 PM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: dnewton3]
gonefishing Offline


Registered: 10/28/11
Posts: 290
Loc: ND
Originally Posted By: dnewton3
Nice report.

Cu will settle with time; give it more to do so.

Easily could extend to the full 100% OLM, and probably longer (although I realize that's considered heresy ....)


Going past 0% on the OLM might be in the picture someday down the road...but not while I have warranty. I don't know if there is anyway for a dealership to tell if the vehicle has gone past 0% but I would rather not for piece of mind.
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#3444870 - 08/03/14 04:35 PM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: gonefishing]
Shannow Offline


Registered: 12/12/02
Posts: 32849
Loc: Oz
Still wondering how long Blackstone are going to keep reporting the old viscosity spread for 20s...J300 update has been a little while ago now

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#3445360 - 08/04/14 07:35 AM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: Shannow]
Shannow Offline


Registered: 12/12/02
Posts: 32849
Loc: Oz
Originally Posted By: Shannow
Still wondering how long Blackstone are going to keep reporting the old viscosity spread for 20s...J300 update has been a little while ago now


http://paservice.it/wp-content/uploads/2013/06/J300_201304.pdf

to see the 16/20 bands...

Just realised, that I think a 20W16 could be manufactured if you so desired.

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#3445385 - 08/04/14 08:15 AM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: gonefishing]
A_Harman Offline


Registered: 10/01/10
Posts: 5936
Loc: Michigan
Iron came down nicely from the 1st to 2nd oil sample.
I think you can push the OLM to 0% now that the truck has ~20k miles on it.
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#3445635 - 08/04/14 12:33 PM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: Shannow]
gonefishing Offline


Registered: 10/28/11
Posts: 290
Loc: ND
Originally Posted By: Shannow
Originally Posted By: Shannow
Still wondering how long Blackstone are going to keep reporting the old viscosity spread for 20s...J300 update has been a little while ago now


http://paservice.it/wp-content/uploads/2013/06/J300_201304.pdf

to see the 16/20 bands...

Just realised, that I think a 20W16 could be manufactured if you so desired.


According to this information, a 20 grade should be within 6.9-9.3 [email protected]C?
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2014 GMC Sierra 1500 SLT All-Terrain 5.3 4x4

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#3445656 - 08/04/14 01:15 PM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: gonefishing]
badtlc Offline


Registered: 06/08/06
Posts: 4896
Loc: KC
your viscosity and FP indicate you do have some fuel dilution issues.
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#3447691 - 08/06/14 09:36 AM Re: GM Dexos 0W-20 6,069 miles 2014 GMC Sierra 5.3 [Re: gonefishing]
Jocephus Offline


Registered: 04/28/12
Posts: 219
Loc: AR
I just sent off my sample for my 2014. Same engine, oil, and filter. I've got 14k on the truck and this sample is from my 2nd change. I'm interested to see if the numbers are similar.
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