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Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX #5004387
02/07/19 09:34 PM
02/07/19 09:34 PM
Joined: Feb 2019
Posts: 4
MI
M1Spartan Offline OP
M1Spartan  Offline OP

Joined: Feb 2019
Posts: 4
MI
Greetings Everyone,

First time poster here, but I have been on the site and found some useful information several times before. I have a 2015 Colorado pickup (49,000 miles) with the 3.6L V6. It is a GDI engine, which I know can mean increased fuel dilution. I have a 20 minute drive to and from work each day. In the cold Michigan winter, I have often suspected that 20 mins might not be enough time for fuel in the oil to burn off. My OLM must suspect the same, as it gets down to 10% or so after about 4,500 miles. Note, I rarely idle the vehicle for more than a minute or two. I decided to get a UOA to see how things would look.

Forgive me, as I did read the thread on how to post UOA's, but I seem to be struggling with the "code" method. I will simply summarize, as follows:

Oil is 5w-30 Mobil 1 EP, 5,000 miles on the oil

Fuel % is 2.5, "should be" below 2
SUS viscosity at 210F is 52.0, should be 55-63
cSt viscosity at 100C is 7.87, should be 8.8-11.3
Flashpoint is 335, should be >385

Everything else seemed normal. The comments on the OUA indicated the fuel dilution was beyond what is normally attributed to short trips, but that the engine was "wearing fine" and the fuel therefore doesn't seem to be causing damage. It warned me to make sure my oil level doesn't rise (I got ~6 quarts out on the last change). It concluded a 5k interval was fine to stick with, and that it was "overall good".

Obviously those comments made me feel better, but I am curious if some of you would be alarmed by any of those metrics. I am very picky about taking good care of my vehicles, so I want to do right. I am new to the UOA world, and would appreciate any input.

Thanks!

Last edited by M1Spartan; 02/07/19 09:53 PM.
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: M1Spartan] #5004407
02/07/19 10:04 PM
02/07/19 10:04 PM
Joined: Aug 2016
Posts: 416
Alberta
carviewsonic Offline
carviewsonic  Offline

Joined: Aug 2016
Posts: 416
Alberta
Maybe a shorter interval in the winter months? Although, from the UOA's I have seen posted here, it doesn't seem that higher than normal fuel dilution correlates with increased engine wear.


'18 Impala
'05 Park Avenue
'07 Honda Accord
'09 VStar 1300
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: M1Spartan] #5004422
02/07/19 10:22 PM
02/07/19 10:22 PM
Joined: Feb 2016
Posts: 446
MD
claluja Offline
claluja  Offline

Joined: Feb 2016
Posts: 446
MD
What lab did you use? Your viscosity suggests much more fuel dilution than 2%.

Last edited by claluja; 02/07/19 10:25 PM.

2014 F250 6.7L PSD
2006 Sequoia 4.7L
2005 E500 5.0L
2018 Jeep Rubicon, Pentastar 3.6L
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: claluja] #5004425
02/07/19 10:24 PM
02/07/19 10:24 PM
Joined: Feb 2019
Posts: 4
MI
M1Spartan Offline OP
M1Spartan  Offline OP

Joined: Feb 2019
Posts: 4
MI
Originally Posted by claluja
What lab did you use?


I used Blackstone Labs based on several I’ve seen on here before.

Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: M1Spartan] #5004431
02/07/19 10:29 PM
02/07/19 10:29 PM
Joined: Feb 2016
Posts: 446
MD
claluja Offline
claluja  Offline

Joined: Feb 2016
Posts: 446
MD
Originally Posted by M1Spartan
Originally Posted by claluja
What lab did you use?


I used Blackstone Labs based on several I’ve seen on here before.


You probably have over 5% fuel dilution, based on your viscosity and flash.

Use a lab that uses gas chromatography (GC) to measure fuel dilution if you want a real value. You can't trust Blackstone allegations on fuel dilution, as they don't actually measure it.

Based on UOAs I've seen, some engines can handle 5% fuel dilution without undue wear, and some can't. Just need to keep an eye on that and be aware of the issue. Some say using 93 octane can reduce fuel dilution - do some searching on here for that if you're interested.

Last edited by claluja; 02/07/19 10:35 PM.

2014 F250 6.7L PSD
2006 Sequoia 4.7L
2005 E500 5.0L
2018 Jeep Rubicon, Pentastar 3.6L
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: claluja] #5004435
02/07/19 10:37 PM
02/07/19 10:37 PM
Joined: Feb 2019
Posts: 4
MI
M1Spartan Offline OP
M1Spartan  Offline OP

Joined: Feb 2019
Posts: 4
MI
Originally Posted by claluja
Originally Posted by M1Spartan
Originally Posted by claluja
What lab did you use?


I used Blackstone Labs based on several I’ve seen on here before.


You probably have over 5% fuel dilution, based on your viscosity and flash.

Use a lab that uses gas chromatography (GC) to measure fuel dilution if you want a real value. You can't trust Blackstone allegations on fuel dilution, as they don't actually measure it.

Based on UOAs I've seen, some engines can handle 5% fuel dilution without undue wear, and some can't. Just need to keep an eye on that and be aware of the issue. Some say using 93 octane can reduce fuel dilution - do some searching on here for that if you're interested.


Will do, thanks for the information! I do use 89 octane instead of 87, exclusively. I’ll look into one of the other labs at the next 5,000.

Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: M1Spartan] #5004445
02/07/19 10:49 PM
02/07/19 10:49 PM
Joined: Aug 2004
Posts: 2,271
5600 feet elevation, Arizona
double vanos Offline
double vanos  Offline

Joined: Aug 2004
Posts: 2,271
5600 feet elevation, Arizona
Time for a thicker oil with that much dilution. Mobil 1 0w40 would work, a little fuel dilution and it’s a stout 30 weight.


Sabine Schmitz is the Queen of the 'Ring; Svetlana Kapanina is the Queen of the SKIES...
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: claluja] #5004448
02/07/19 10:58 PM
02/07/19 10:58 PM
Joined: Sep 2011
Posts: 141
Denver, CO
zeke1985 Offline
zeke1985  Offline

Joined: Sep 2011
Posts: 141
Denver, CO
Originally Posted by claluja
Originally Posted by M1Spartan
Originally Posted by claluja
What lab did you use?


I used Blackstone Labs based on several I’ve seen on here before.


You probably have over 5% fuel dilution, based on your viscosity and flash.

Use a lab that uses gas chromatography (GC) to measure fuel dilution if you want a real value. You can't trust Blackstone allegations on fuel dilution, as they don't actually measure it.

Based on UOAs I've seen, some engines can handle 5% fuel dilution without undue wear, and some can't. Just need to keep an eye on that and be aware of the issue. Some say using 93 octane can reduce fuel dilution - do some searching on here for that if you're interested.

.

What lab would be good for fuel dilution?

Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: M1Spartan] #5004541
02/08/19 06:08 AM
02/08/19 06:08 AM
Joined: May 2007
Posts: 7,882
Indianapolis, IN
dnewton3 Offline
Global Moderator
dnewton3  Offline
Global Moderator

Joined: May 2007
Posts: 7,882
Indianapolis, IN
welcome new member!

There is likely way more fuel than 2% in there.

You didn't post your wear metals, but we'll presume they are fine or you would have said otherwise.

Also, despite the heresy this suggestion will invoke, I recommend you just use conventional oil. 5k miles on M1 EP is a total waste of money. If the fuel dilution is going to drive you (pardon the pun) to shorter OCIs, then using any manner of synthetic oil is a utter waste of oil. Realizing the vehicle is still under OEM warranty for a little while, and you're not likely to extend your OCIs; just use inexpensive API approved dino oil and save yourself a ton of cash.

Last edited by dnewton3; 02/08/19 06:09 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: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: zeke1985] #5004552
02/08/19 06:23 AM
02/08/19 06:23 AM
Joined: Feb 2016
Posts: 446
MD
claluja Offline
claluja  Offline

Joined: Feb 2016
Posts: 446
MD
Originally Posted by zeke1985
Originally Posted by claluja
Originally Posted by M1Spartan
Originally Posted by claluja
What lab did you use?


I used Blackstone Labs based on several I’ve seen on here before.


You probably have over 5% fuel dilution, based on your viscosity and flash.

Use a lab that uses gas chromatography (GC) to measure fuel dilution if you want a real value. You can't trust Blackstone allegations on fuel dilution, as they don't actually measure it.

Based on UOAs I've seen, some engines can handle 5% fuel dilution without undue wear, and some can't. Just need to keep an eye on that and be aware of the issue. Some say using 93 octane can reduce fuel dilution - do some searching on here for that if you're interested.

.

What lab would be good for fuel dilution?


Polaris (Oil Analyzers) is an example.


2014 F250 6.7L PSD
2006 Sequoia 4.7L
2005 E500 5.0L
2018 Jeep Rubicon, Pentastar 3.6L
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: dnewton3] #5004554
02/08/19 06:29 AM
02/08/19 06:29 AM
Joined: Feb 2019
Posts: 4
MI
M1Spartan Offline OP
M1Spartan  Offline OP

Joined: Feb 2019
Posts: 4
MI
Wear metals are as follows, with universal averages in the parentheses. I really appreciate the feedback thus far, everyone. It is clear that I have high level of fuel dilution. How uncomfortable would that fuel dilution make most of you? Blackstone indicated my 5k interval was fine, but I am tempted to reduce, at least in the winter.

Let me know what you think of these wear metals. They indicated no concerns.

ALUMINUM - 7 (4)
CHROMIUM - 0 (0)
IRON - 19 (19)
COPPER - 5 (8)
LEAD - 0 (0)
TIN - 0 (0)
MOLYBDENUM - 70 (78)
NICKEL - 0 (0)
MANGANESE - 1 (1)
SILVER - 0 (0)
TITANIUM - 0 (1)
POTASSIUM - 2 (3)
BORON - 36 (44)
SILICON - 7 (14)
SODIUM - 6 (34)
CALCIUM - 1039 (1676)
MAGNESIUM - 652 (319)
PHOSPHORUS - 646 (679)
ZINC - 756 (781)
BARIUM - 0 (0)

Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: M1Spartan] #5004692
02/08/19 10:19 AM
02/08/19 10:19 AM
Joined: Dec 2004
Posts: 10,661
1/2 hr N.E. of Detroit
Triple_Se7en Offline
Triple_Se7en  Offline

Joined: Dec 2004
Posts: 10,661
1/2 hr N.E. of Detroit
Blackstone needs to adjust their universal averages.
For instance;
The universal average for Calcium using Mobil-1 EP 5w30 in SN Plus, is more like a 1000, not 1600.

Last edited by Triple_Se7en; 02/08/19 10:24 AM.

19 Hyundai Santa Fe 2.4 GDI Castrol Edge 5w30 / NAPA Mann-Hummel Pro Select filter
04 Chev Colorado 3.5 QS / Valv syn 5w30 blend K&N filter
03 Chev Malibu 3.1 QS / Valv Syn 5w30 blend Fram EG filter
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: M1Spartan] #5004693
02/08/19 10:21 AM
02/08/19 10:21 AM
Joined: Jun 2016
Posts: 4,279
MN
oil_film_movies Offline
oil_film_movies  Offline

Joined: Jun 2016
Posts: 4,279
MN
Using a 0w-40 would be called for here due to the fuel dilution. It shears & dilutes down to a 30 weight in no time at all, with some margin to work with. Your 7.87 cSt is a bit too low. Any brand of 0w40 will do fine. Note new Corvettes have gone to a 0w-40 dexos2, and you could use that one specifically, but really any 0w-40 would work here, as in the ones available at Walmart or Amazon.

Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: dnewton3] #5004713
02/08/19 10:38 AM
02/08/19 10:38 AM
Joined: Oct 2014
Posts: 13,597
Canyon County Idaho
CT8 Online content
CT8  Online Content

Joined: Oct 2014
Posts: 13,597
Canyon County Idaho
Originally Posted by dnewton3
welcome new member!

There is likely way more fuel than 2% in there.

You didn't post your wear metals, but we'll presume they are fine or you would have said otherwise.

Also, despite the heresy this suggestion will invoke, I recommend you just use conventional oil. 5k miles on M1 EP is a total waste of money. If the fuel dilution is going to drive you (pardon the pun) to shorter OCIs, then using any manner of synthetic oil is a utter waste of oil. Realizing the vehicle is still under OEM warranty for a little while, and you're not likely to extend your OCIs; just use inexpensive API approved dino oil and save yourself a ton of cash.

The marketing dnewton3 the marketing!


2015 F150 2.7
2018 F350 6.2
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: oil_film_movies] #5004715
02/08/19 10:41 AM
02/08/19 10:41 AM
Joined: Dec 2005
Posts: 11,129
Upper Midwest
kschachn Offline
kschachn  Offline

Joined: Dec 2005
Posts: 11,129
Upper Midwest
Originally Posted by oil_film_movies
Using a 0w-40 would be called for here due to the fuel dilution. It shears & dilutes down to a 30 weight in no time at all, with some margin to work with. Your 7.87 cSt is a bit too low. Any brand of 0w40 will do fine. Note new Corvettes have gone to a 0w-40 dexos2, and you could use that one specifically, but really any 0w-40 would work here, as in the ones available at Walmart or Amazon.

Do all 0W-40 oils shear down, including Castrol 0W-40? How would you know? Has anyone ever posted a UOA here that conclusively discriminates between actual mechanical shear and fuel dilution?

Fuel dilution would be independent of the oil used, correct?

Last edited by kschachn; 02/08/19 10:43 AM.

1994 BMW 530i, 241K
1996 Honda Accord, 267K
1999 Toyota Sienna, 410K
2000 Toyota ECHO, 280K
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