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2015 duramax, UOA schaeffer's 15 40 #5008147
02/11/19 04:06 PM
02/11/19 04:06 PM
Joined: Feb 2010
Posts: 38
Ohio
wjm Offline OP
wjm  Offline OP

Joined: Feb 2010
Posts: 38
Ohio
First sample on this truck after 1st run on schaeffer's. Miles from the whole year is the only reason I changed it.

Screenshot_20190211-170206_Drive.jpg
Re: 2015 duramax, UOA schaeffer's 15 40 [Re: wjm] #5008263
02/11/19 06:24 PM
02/11/19 06:24 PM
Joined: Aug 2010
Posts: 1,293
pa
benjy Offline
benjy  Offline

Joined: Aug 2010
Posts: 1,293
pa
not readable!

Re: 2015 duramax, UOA schaeffer's 15 40 [Re: wjm] #5008311
02/11/19 07:22 PM
02/11/19 07:22 PM
Joined: Oct 2017
Posts: 248
A Highway Near You
PiperOne Offline
PiperOne  Offline

Joined: Oct 2017
Posts: 248
A Highway Near You
Even tried saving the image and then zooming in...pixelates before number are large enough to read. Is it possible to upload something other than a screen shot of your phone maybe?


HDEO in Diesel Engines. No spark plugs here.
Re: 2015 duramax, UOA schaeffer's 15 40 [Re: wjm] #5008372
02/11/19 08:37 PM
02/11/19 08:37 PM
Joined: Feb 2010
Posts: 38
Ohio
wjm Offline OP
wjm  Offline OP

Joined: Feb 2010
Posts: 38
Ohio
Hopefully you can open this

Attached PDF document
021119_2133.pdf (46 downloads)
Re: 2015 duramax, UOA schaeffer's 15 40 [Re: wjm] #5008566
02/12/19 06:59 AM
02/12/19 06:59 AM
Joined: Mar 2004
Posts: 21,614
Upstate NY
Donald Online content
Donald  Online Content

Joined: Mar 2004
Posts: 21,614
Upstate NY
I do not see the miles on unit or miles on oil? What is the goal here? To extend the oil changes?


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: 2015 duramax, UOA schaeffer's 15 40 [Re: wjm] #5008631
02/12/19 08:46 AM
02/12/19 08:46 AM
Joined: Jun 2017
Posts: 702
DFW
JustN89 Online content
JustN89  Online Content

Joined: Jun 2017
Posts: 702
DFW
Hope this helps.

UOA.jpg
Re: 2015 duramax, UOA schaeffer's 15 40 [Re: Donald] #5008667
02/12/19 09:38 AM
02/12/19 09:38 AM
Joined: Feb 2010
Posts: 38
Ohio
wjm Offline OP
wjm  Offline OP

Joined: Feb 2010
Posts: 38
Ohio
There was 4550 miles on the oil. Just wondering if there is really much difference of protection from this versus a dino oil if only going to put around 5k miles a year? Don't care about the cost just the best product

Re: 2015 duramax, UOA schaeffer's 15 40 [Re: wjm] #5008694
02/12/19 10:08 AM
02/12/19 10:08 AM
Joined: Jun 2017
Posts: 702
DFW
JustN89 Online content
JustN89  Online Content

Joined: Jun 2017
Posts: 702
DFW
Depends on what your definition of best is, but I seriously doubt your engine would notice a difference between this or any other conventional 15W-40 over a 5k mile OCI.

Re: 2015 duramax, UOA schaeffer's 15 40 [Re: wjm] #5008716
02/12/19 10:28 AM
02/12/19 10:28 AM
Joined: Dec 2017
Posts: 1,575
US
JLTD Online shocked
JLTD  Online Shocked

Joined: Dec 2017
Posts: 1,575
US
Looks like 2 years would be easy...


I'm a thickie; assimilate
But 20s have their place

Using AMSOIL

Hers: 2008 Jeep Liberty 138k, SS 5w30/Amsoil

His: 2015 4Runner 45k, OE 5w30/Wix

Re: 2015 duramax, UOA schaeffer's 15 40 [Re: JustN89] #5008749
02/12/19 10:56 AM
02/12/19 10:56 AM
Joined: Feb 2010
Posts: 38
Ohio
wjm Offline OP
wjm  Offline OP

Joined: Feb 2010
Posts: 38
Ohio
Ok thanks kinda what I was thinking. Is it something to go by 12 months or actually go by the drain intervals? I figured a year was long enough

Re: 2015 duramax, UOA schaeffer's 15 40 [Re: wjm] #5008884
02/12/19 12:48 PM
02/12/19 12:48 PM
Joined: Jun 2009
Posts: 1,391
Alaska
m37charlie Offline
m37charlie  Offline

Joined: Jun 2009
Posts: 1,391
Alaska
If your low annual mileage is very short in town driving ( for which an emissions controlled diesel is unsuitable anyways) I would change every year. But in that case you have bigger problems i.e. the DPF.
If it is infrequent longer trips I would recommend extending OCI to at least 10k miles/2yr or longer. Oil does not degrade just sitting in the crankcase.


05 Unimog U500/Unicat camper/Delvac 1 SHC ACEA E4/E5
09 BMW X5 35d/Delvac1 LE 5W30
88 Toyota OJ50LV OM314 motor D1 SHC
52 Dodge M37/Hercules diesel

Re: 2015 duramax, UOA schaeffer's 15 40 [Re: m37charlie] #5009195
02/12/19 05:40 PM
02/12/19 05:40 PM
Joined: Feb 2010
Posts: 38
Ohio
wjm Offline OP
wjm  Offline OP

Joined: Feb 2010
Posts: 38
Ohio
Ok thanks, 90% is pulling my fithwheel camper weighs around 11k dry. Unless I'm not reading it correctly, I thought schaeffer's had a lot of moly and higher zinc? From this sample it doesn't look much different than a sample I saw of Mobil delvec 1300 for a dino oil. Any insight on that?

Re: 2015 duramax, UOA schaeffer's 15 40 [Re: wjm] #5009540
02/13/19 05:49 AM
02/13/19 05:49 AM
Joined: May 2007
Posts: 7,766
Indianapolis, IN
dnewton3 Offline
dnewton3  Offline

Joined: May 2007
Posts: 7,766
Indianapolis, IN
I can assure you with total, absolute certainty that the Dmax engine could not possible care less what's in the crankcase, as long as it's a properly spec'd lube. Brand and grade mean absolutely zilch to this engine series. None. Zip. Nada.

If you intend to stick to one or two year OCIs, based on the miles you drive, there is no reason to use anything but a conventional 10w-30 or 15w-40. Either grade will provide excellent wear control and save you a ton of cash. I routinely ran 3 year OCIs out to 12k miles, on dino 10w-30 and had nothing but great results, even when hauling my RV out to the Rockies and back, multiple times. Honestly you can follow the IOLM in a Dmax and just use dino oil. Unless you suspect a contamination issue, UOAs are pretty much worthless on a Dmax; they've never showed an issue in a healthy engine, and the only proof they provide is that these engines are completely and utterly immune to brand/grade oil choices. It would be impossible for me to overstate this fact; 6.6L Dmax engines are some of the best wearing light-duty diesel engines out there, and they simply do not show any preference whatsoever to any brand/grade of oil, regardless of what your emotions thinks are important.

Probably the best thing going for your generation of Dmax is that there exists a fuel injection nozzle downstream of the cylinders, in the exhaust, for the DPF purpose. This means no fuel dilution that's otherwise common in other compliant diesel engines. (this is presuming you're stock). No need to worry about cylinder's washing down with excess fuel. I wish all the other diesel engines had this strategy; worth the extra expense in OEM design if you ask me.

If you intend to GREATLY increase the miles you drive annually, or spread the duration out over many years, then the syn might make sense. This would be smart only if you monitor with UOAs.

I have over 550 Dmax 6.6L UOAs in my database. I do statistical process quality control for a living. I would know if these engines had an oil preference. Trust me; they don't.

Last edited by dnewton3; 02/13/19 05:57 AM.

The act of preventative maintenance, in and of itself, is FAR MORE important than brand/grade/base choices among lubes and filters.
- under maintaining something is akin to abuse/neglect; that can kill equipment by shortening the lifespan
- over maintaining something has never been proven to be anything but a waste of time and money
Re: 2015 duramax, UOA schaeffer's 15 40 [Re: wjm] #5009709
02/13/19 09:09 AM
02/13/19 09:09 AM
Joined: Dec 2010
Posts: 64
Savannah
wensteph Offline
wensteph  Offline

Joined: Dec 2010
Posts: 64
Savannah
I've got a 2019 L5P and I am in agreement with dnewton3's opinion on Duramax oil needs. I'm currently on the single dealer change which is Delvac, probably dino, and will test that at 5K on the oil. Next change will be Super Tech and after that Rotella T5 and then a Schaeffer's. The only reason I'm doing this will be to add to the L5P database. The new engine shares only a name and displacement with prior generation Duramax's. Hopefully it's as easy on oil. It probably is.

Re: 2015 duramax, UOA schaeffer's 15 40 [Re: dnewton3] #5009917
02/13/19 12:24 PM
02/13/19 12:24 PM
Joined: Dec 2006
Posts: 301
Idaho
BoiseRob Offline
BoiseRob  Offline

Joined: Dec 2006
Posts: 301
Idaho
Originally Posted by dnewton3
If you intend to stick to one or two year OCIs, based on the miles you drive, there is no reason to use anything but a conventional 10w-30 or 15w-40.


Dave, the 15w40 he's running is Schaeffer's basic syn-blend oil. They don't make a straight conventional unless you use #151 Moly Bond X-200 which only has a CI-4 rating with a TBN of 12...

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