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UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles #4704530
03/23/18 06:49 PM
03/23/18 06:49 PM
Joined: May 2015
Posts: 973
Missouri
gabriel9766 Offline OP
gabriel9766  Offline OP

Joined: May 2015
Posts: 973
Missouri

Got a UAO again on my maibu. Oil life was at around 9%. They mentioned iron is a bit high for the milage/ppm. And what do you think about the flash point? Also refilled with PPPP 0w20 and a napa gold.


2015 Malibu LT 2.5L PPPP 0w20 46.1K
2007 Escape XLT 3.0L 5Q STHM 5w30/1Q MC full syn 5W20 115K
2010 Fusion SE 2.5L MC 0w20 110K
2008 Escape XLT 2.3L MC 5w30 187K
2007 Fusion SE 2.3L- 173.5K STHM 0W20
Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: gabriel9766] #4704538
03/23/18 06:52 PM
03/23/18 06:52 PM
Joined: Mar 2015
Posts: 12,380
In the shop
53' Stude Offline
53' Stude  Offline

Joined: Mar 2015
Posts: 12,380
In the shop
Where in hades is sodium coming from??



Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: 53' Stude] #4704542
03/23/18 06:55 PM
03/23/18 06:55 PM
Joined: May 2015
Posts: 973
Missouri
gabriel9766 Offline OP
gabriel9766  Offline OP

Joined: May 2015
Posts: 973
Missouri
I think oil change before this was napa full syn 0w20... maybe its from tht.


2015 Malibu LT 2.5L PPPP 0w20 46.1K
2007 Escape XLT 3.0L 5Q STHM 5w30/1Q MC full syn 5W20 115K
2010 Fusion SE 2.5L MC 0w20 110K
2008 Escape XLT 2.3L MC 5w30 187K
2007 Fusion SE 2.3L- 173.5K STHM 0W20
Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: gabriel9766] #4704590
03/23/18 07:29 PM
03/23/18 07:29 PM
Joined: Jul 2017
Posts: 542
Texas (south)
FermeLaPorte Offline
FermeLaPorte  Offline

Joined: Jul 2017
Posts: 542
Texas (south)
Check your head gasket


Always Mobil 1
2014 1.6L Nissan Versa Sedan, 5 spd, 5k OCI.
2011 3.5L Chevrolet Impala, Automatic, 5k OCI.
Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: gabriel9766] #4704628
03/23/18 08:01 PM
03/23/18 08:01 PM
Joined: Oct 2006
Posts: 1,900
Oshawa, Ont. Canada
irv Offline
irv  Offline

Joined: Oct 2006
Posts: 1,900
Oshawa, Ont. Canada
Originally Posted By: gabriel9766

Got a UAO again on my maibu. Oil life was at around 9%. They mentioned iron is a bit high for the milage/ppm. And what do you think about the flash point? Also refilled with PPPP 0w20 and a napa gold.


You have a pretty good record of multiple UOAs using Mobil-1 showing 20+ Iron so I'm looking forward to seeing your UOA after your run of PPPP.






Last edited by irv; 03/23/18 08:30 PM.

2017 Chevy Impala 3.6 L.
2013 Ram 5.7 L Hemi Bighorn QC 4x4
2008 Chevy Malibu 2.4 L Ecotec
Pennzoil Platinum and/or Pennzoil Ultra Platinum in all 3.
Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: gabriel9766] #4704668
03/23/18 08:35 PM
03/23/18 08:35 PM
Joined: Apr 2008
Posts: 39,115
Ontario, Canada
OVERKILL Offline
OVERKILL  Offline

Joined: Apr 2008
Posts: 39,115
Ontario, Canada
Originally Posted By: gabriel9766
I think oil change before this was napa full syn 0w20... maybe its from tht.


So the iron number seems consistent, even with a different oil? It also seems to mirror the Universal Averages, so that may just be typical for this engine.


2019 RAM 1500 Sport - Mobil 1 EP 0w-20, FRAM Ultra
2016 Grand Cherokee SRT - Castrol Edge 0w-40, FRAM Ultra
Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: gabriel9766] #4705051
03/24/18 09:28 AM
03/24/18 09:28 AM
Joined: May 2002
Posts: 21,519
Oakville, Ontario
Patman Offline
Global Moderator
Patman  Offline
Global Moderator

Joined: May 2002
Posts: 21,519
Oakville, Ontario
It really bothers me that M1 0w20 doesn't hold it's viscosity very well. I've seen that in every one of my UOAs with it. I don't understand technically why this happens, you'd think a 0w20 would be more stable than a 5w30, and M1 5w30 holds it's viscosity very well.


2018 Corvette, 9k, M1 ESP Formula 5w30 & NAPA Gold
2006 Civic EX Coupe, 149k, PUP 5w20 & Fram Ultra
2010 BMW 328i X-Drive,113k, GC 0w40 & Fram Ultra

Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: Patman] #4705103
03/24/18 10:19 AM
03/24/18 10:19 AM
Joined: Apr 2008
Posts: 39,115
Ontario, Canada
OVERKILL Offline
OVERKILL  Offline

Joined: Apr 2008
Posts: 39,115
Ontario, Canada
Originally Posted By: Patman
It really bothers me that M1 0w20 doesn't hold it's viscosity very well. I've seen that in every one of my UOAs with it. I don't understand technically why this happens, you'd think a 0w20 would be more stable than a 5w30, and M1 5w30 holds it's viscosity very well.


Given the drop in flash point, I'd say fuel would be a factor here.


2019 RAM 1500 Sport - Mobil 1 EP 0w-20, FRAM Ultra
2016 Grand Cherokee SRT - Castrol Edge 0w-40, FRAM Ultra
Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: gabriel9766] #4705112
03/24/18 10:26 AM
03/24/18 10:26 AM
Joined: May 2002
Posts: 21,519
Oakville, Ontario
Patman Offline
Global Moderator
Patman  Offline
Global Moderator

Joined: May 2002
Posts: 21,519
Oakville, Ontario
True, but I have a lot of UOAs with M1 0w20 where I had zero fuel in the oil and it still thinned out to under 7cst. I'm hoping that the PUP 5w20 that I will be using on my next interval in my Honda will hold it's viscosity better.

Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: Patman] #4705117
03/24/18 10:31 AM
03/24/18 10:31 AM
Joined: Dec 2005
Posts: 10,897
Upper Midwest
kschachn Offline
kschachn  Offline

Joined: Dec 2005
Posts: 10,897
Upper Midwest
Originally Posted By: Patman
True, but I have a lot of UOAs with M1 0w20 where I had zero fuel in the oil and it still thinned out to under 7cst. I'm hoping that the PUP 5w20 that I will be using on my next interval in my Honda will hold it's viscosity better.

If those are Blackstone UOAs though I wouldn't trust anything they tell you about fuel dilution. I think a lot of times on here when people point to "shearing" it is instead fuel dilution or an improper viscosity measurement. It will be interesting to see what the other oil shows, although fuel dilution is variable with climate and operating conditions so it may still be inconclusive.


1994 BMW 530i, 241K
1996 Honda Accord, 267K
1999 Toyota Sienna, 409K
2000 Toyota ECHO, 280K
Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: kschachn] #4705178
03/24/18 11:41 AM
03/24/18 11:41 AM
Joined: Apr 2008
Posts: 39,115
Ontario, Canada
OVERKILL Offline
OVERKILL  Offline

Joined: Apr 2008
Posts: 39,115
Ontario, Canada
Originally Posted By: kschachn
Originally Posted By: Patman
True, but I have a lot of UOAs with M1 0w20 where I had zero fuel in the oil and it still thinned out to under 7cst. I'm hoping that the PUP 5w20 that I will be using on my next interval in my Honda will hold it's viscosity better.

If those are Blackstone UOAs though I wouldn't trust anything they tell you about fuel dilution. I think a lot of times on here when people point to "shearing" it is instead fuel dilution or an improper viscosity measurement. It will be interesting to see what the other oil shows, although fuel dilution is variable with climate and operating conditions so it may still be inconclusive.


Exactly. Have to look at flashpoint t know.


2019 RAM 1500 Sport - Mobil 1 EP 0w-20, FRAM Ultra
2016 Grand Cherokee SRT - Castrol Edge 0w-40, FRAM Ultra
Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: gabriel9766] #4705535
03/24/18 04:54 PM
03/24/18 04:54 PM
Joined: Oct 2006
Posts: 1,900
Oshawa, Ont. Canada
irv Offline
irv  Offline

Joined: Oct 2006
Posts: 1,900
Oshawa, Ont. Canada
Originally Posted By: gabriel9766

Got a UAO again on my maibu. Oil life was at around 9%. They mentioned iron is a bit high for the milage/ppm. And what do you think about the flash point? Also refilled with PPPP 0w20 and a napa gold.


Gabriel, was your driving mostly city/short trip type drives? My wife's 2017 3.6 Impala is currently at 34% percent with around 3,400 kms on it basically driving around in those scenarios.

I was thinking to myself, that seems pretty short but then again with the extra idling, cold winter, short trips, I assume it's normal with GM's these days?


2017 Chevy Impala 3.6 L.
2013 Ram 5.7 L Hemi Bighorn QC 4x4
2008 Chevy Malibu 2.4 L Ecotec
Pennzoil Platinum and/or Pennzoil Ultra Platinum in all 3.
Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: gabriel9766] #4706078
03/25/18 08:11 AM
03/25/18 08:11 AM
Joined: Jan 2009
Posts: 14,126
Illinois
tig1 Offline
tig1  Offline

Joined: Jan 2009
Posts: 14,126
Illinois
Originally Posted By: gabriel9766
I think oil change before this was napa full syn 0w20... maybe its from tht.


It's best to run two OCIs with the same oil before doing a UOA.


2007 Ford Fusion 239,000 miles
M1 0-20 EP
2017 Ford Fusion 65K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and Valvoline LV
M1 10-30 in all OPE
MC filters

Re: UAO Mobil1 AFE 0W20 2015 Malibu 4,995 miles [Re: FermeLaPorte] #4706732
03/25/18 07:10 PM
03/25/18 07:10 PM
Joined: Jun 2016
Posts: 3,941
MN
oil_film_movies Offline
oil_film_movies  Offline

Joined: Jun 2016
Posts: 3,941
MN
Originally Posted By: FermeLaPorte
Check your head gasket
There would be potassium if coolant were getting into the oil. The sodium is from the high-sodium NAPA (really Valvoline, dexos1 Gen1 formula) previous oil changes.

About the drop in KV100 visc, a drop of 1.5 cSt here isn't that bad. Normally in 5k miles like this visc will drop, some from fuel dilution, and some due to VII breakdown, and then KV100 starts to rise as it passes around 7k miles due to oxidation beginning to happen (anti-oxidants breaking down, TBN getting low allows oxidation to happen more and more).

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