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16 Silverado 5.3L, A/C Delco 0W-20, 7745 Miles #4812468
07/12/18 04:02 PM
07/12/18 04:02 PM
Joined: Sep 2016
Posts: 35
MD, USA
Why Offline OP
Why  Offline OP
Joined: Sep 2016
Posts: 35
MD, USA


Decided to take advantage of a free dealer oil change, and as you can see from my results, am regretting it. This OCI did occur through an abnormally cold winter and spring and it did do a lot of idling. Miles were probably 50/50 city/highway. Filter was new Fram Ultra. OLM was at 1% remaining. The two previous samples were with PUP 5W-20.

Dumped the oil and refilled with M1 EP 0W-20 that I scored for $14/jug. Curious to see if the iron drops back down next sample.

Re: 16 Silverado 5.3L, A/C Delco 0W-20, 7745 Miles [Re: Why] #4812484
07/12/18 04:28 PM
07/12/18 04:28 PM
Joined: Dec 2017
Posts: 1,233
US
JLTD Offline
JLTD  Offline
Joined: Dec 2017
Posts: 1,233
US
Bit of an increase in wear metals for the dealer oil....doubt they even knew what it was. Hope the M1 brings it down for you, how long was this run on the calendar?


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

Using AMSOIL

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

His: 2015 4Runner 41k, OE 5w20/Wix

Re: 16 Silverado 5.3L, A/C Delco 0W-20, 7745 Miles [Re: JLTD] #4812487
07/12/18 04:36 PM
07/12/18 04:36 PM
Joined: Sep 2016
Posts: 35
MD, USA
Why Offline OP
Why  Offline OP
Joined: Sep 2016
Posts: 35
MD, USA
Originally Posted By: JLTD
Bit of an increase in wear metals for the dealer oil....doubt they even knew what it was. Hope the M1 brings it down for you, how long was this run on the calendar?


A tad over 10 months.

Re: 16 Silverado 5.3L, A/C Delco 0W-20, 7745 Miles [Re: Why] #4812544
07/12/18 05:49 PM
07/12/18 05:49 PM
Joined: Nov 2006
Posts: 20,349
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,349
MA, Mittelfranken.de
This help...



ASE L1, Master. Deutsch Meisterbrief.
Re: 16 Silverado 5.3L, A/C Delco 0W-20, 7745 Miles [Re: Trav] #4812558
07/12/18 05:56 PM
07/12/18 05:56 PM
Joined: Sep 2016
Posts: 35
MD, USA
Why Offline OP
Why  Offline OP
Joined: Sep 2016
Posts: 35
MD, USA
Originally Posted By: Trav
This help...




Yes, thanks!

Re: 16 Silverado 5.3L, A/C Delco 0W-20, 7745 Miles [Re: Why] #4812567
07/12/18 06:05 PM
07/12/18 06:05 PM
Joined: Oct 2009
Posts: 3,430
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,430
Wet side WA
All Chevy engines seem to have such bad iron numbers I can't believe it!


2004 Corolla 126232
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74403
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73705 4-22-18
Re: 16 Silverado 5.3L, A/C Delco 0W-20, 7745 Miles [Re: Why] #4812588
07/12/18 06:27 PM
07/12/18 06:27 PM
Joined: May 2012
Posts: 1,763
The land of USA-made Subies!
SubieRubyRoo Offline
SubieRubyRoo  Offline
Joined: May 2012
Posts: 1,763
The land of USA-made Subies!
If you really want to clean it up quick, run this OCI for 3k or less, then follow it up with another OCI of 3k or less. This will flush out any copper or iron that is currently sticking to the block and in nooks and crannies. It worked on my Odyssey, the first UOA when I got it was 31ppm Fe, I ran PP for 3k, then drained and refilled with PP 5w20 again, and ran it 6500 miles. My iron dropped to single digits and has remained there for 30k.

Re: 16 Silverado 5.3L, A/C Delco 0W-20, 7745 Miles [Re: Why] #4812604
07/12/18 06:51 PM
07/12/18 06:51 PM
Joined: Dec 2002
Posts: 1,605
North Carolina
Rat407 Offline
Rat407  Offline
Joined: Dec 2002
Posts: 1,605
North Carolina
The fact that they are saying a trace of fuel to me is telling me that there is a lot more than a trace and that is one of the major factors in this sample not looking so good. It is my understanding that Blackstone's test for fuel isn't very accurate and is an older method.


2002 Silverado 5.3 0w-20 AMSOIL
Re: 16 Silverado 5.3L, A/C Delco 0W-20, 7745 Miles [Re: Why] #4812621
07/12/18 06:59 PM
07/12/18 06:59 PM
Joined: Sep 2016
Posts: 35
MD, USA
Why Offline OP
Why  Offline OP
Joined: Sep 2016
Posts: 35
MD, USA
Just remembered...it wasnt a fram ultra this run, it was also an ac delco filter. Still, the insolubles didnt change so I suppose it did the trick.

Re: 16 Silverado 5.3L, A/C Delco 0W-20, 7745 Miles [Re: Why] #4812691
07/12/18 07:50 PM
07/12/18 07:50 PM
Joined: May 2012
Posts: 2,544
Indiana
Phishin Offline
Phishin  Offline
Joined: May 2012
Posts: 2,544
Indiana
Copper and iron seem way too high
This engine should be way past break in.

Where is the manganese coming from??


2018 Chevy Silerado 3500HD 6.0L Gas: RLI 10w30
2010 Accord-LX K24: MaxLife 5w30 + Torco MPZ
2014 CR-V LX K24: M1 0w30
Re: 16 Silverado 5.3L, A/C Delco 0W-20, 7745 Miles [Re: Why] #4812884
07/13/18 04:14 AM
07/13/18 04:14 AM
Joined: Oct 2008
Posts: 19,172
Sunny Florida
SteveSRT8 Offline
SteveSRT8  Offline
Joined: Oct 2008
Posts: 19,172
Sunny Florida
We who actually own and use GM V8's every day will tell you that the OA numbers are not concerning.

While the iron is "high" it is easily accounted for and the copper may stick around for a long time. Yet the engine will likely easily outlast the rest of the truck.


"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix
Re: 16 Silverado 5.3L, A/C Delco 0W-20, 7745 Miles [Re: JohnnyJohnson] #4812927
07/13/18 06:14 AM
07/13/18 06:14 AM
Joined: Nov 2002
Posts: 30,848
NJ
buster Offline
buster  Offline
Joined: Nov 2002
Posts: 30,848
NJ
Originally Posted By: JohnnyJohnson
All Chevy engines seem to have such bad iron numbers I can't believe it!


That's generally what we see on here. The oil often has little to do with wear metals. A good engine and good oil, you can go longer. Some engines just naturally wear more or show more wear. Some oils can reduce wear a bit, but IMO it's never significant enough that you'd really notice a difference in the long run.


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