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#4507224 - 09/04/17 12:44 PM QSUD/Castrol 0w20 2015 Mazda CX-5 2.5L
yugrus Offline


Registered: 04/06/04
Posts: 439
Loc: ON, Canada
Here's a couple of results of UOA done by two different labs that are local to me. This is convenient, no mailing involved.
Although both provide sufficient information (I guess), WearCheck goes into more details.

The car is 2015 Mazda CX-5 AWD 2.5L gas.

The oil is changed every 4 months, as per owner's manual. The vehicle experiences many short trips and occasional long runs, to get some steam out.
The later OCI involved 3,500km trip to Eastern Canada and back to Ontario.
The engine does not consume any visible amount of oil between OCIs, the oil level predictably goes up if no long hauls are involved, due to the infamous DI fuel dilution.
Earlier sample contained LiquiMoly MoS2 additive, for the duration of the interval.

What do you guys think?

Code:
Date				5/7/2016	8/21/2017
Oil Km				5500		6400
Unit Km				22300		37850
Oil				QSUD 0w20	Castrol Edge 0w20
Lab				WearCheck	NAPA
						
Fe				9.1		5
Cr				0.2		<1
Mn				0.2		
Ni				0		<1
Ti				0		26
Ag				0		<1
Al				7.2		5
Pb				0		<1
Cu				1.9		3
Sn				0.1		0.1
Sb				1.6		
V				0.2		<1
						
Si				13		11
Na				3.7		4
Ka				0.4		0.4
						
B				222		318
Ba				0.4		<1
Mo				691		132
Mg				13		9
Ca				2307		2451
P				727		809
Zn				823		885
S				2614		
Li				0.1		
						
Oxidation (PA)			70		
Nitration (PA)			56		
Sulfation (PA)			65		
AntiWear			19.5		
Infra-red Glycol		0		
Infra-red Water			20.5		
IR (EP H2O)			34.1		
IR (Synth BD1)			1.1		
IR (Synth BD2)			0		
Infra-red Fuel			257.80		
IR (Gasoline)			0.00		
IR (Other)			15.7		
Water %						<0.05
						
Visc @ 100C			6.5		7.1
Base Number (mgKOH/g)				5.9			

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#4507261 - 09/04/17 01:51 PM Re: QSUD/Castrol 0w20 2015 Mazda CX-5 2.5L [Re: yugrus]
danez_yoda Offline


Registered: 07/18/09
Posts: 501
Loc: texas
They look close but even with the Moly boost on the QSUD, the Edge looks to have the edge. (had to say it). The Ti could be from the Edge formulation.

What you did was change the lab as well as the sample so that could account for some of the small differences .
When comparing oils (or anything) you really want to change only the thing you are comparing, keep everything else the same so you know
where the differences came from.

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#4507265 - 09/04/17 01:56 PM Re: QSUD/Castrol 0w20 2015 Mazda CX-5 2.5L [Re: yugrus]
yugrus Offline


Registered: 04/06/04
Posts: 439
Loc: ON, Canada
I know, I just wanted to see if NAPA/ABS lab provides some extra details. They do include TBN, however less of other things compared to WearCheck. I still need to talk to WCP about the meaning of their IR data, looks confusing to me.
_________________________
'14 Chevrolet Tahoe
'15 Mazda CX-5

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#4507299 - 09/04/17 02:48 PM Re: QSUD/Castrol 0w20 2015 Mazda CX-5 2.5L [Re: yugrus]
pbm Offline


Registered: 04/19/04
Posts: 7646
Loc: New York
691 PPM of moly in QSUD....WOW....that's a lot of moly.....
_________________________
'Journalism is Dead'

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#4507322 - 09/04/17 03:19 PM Re: QSUD/Castrol 0w20 2015 Mazda CX-5 2.5L [Re: yugrus]
yugrus Offline


Registered: 04/06/04
Posts: 439
Loc: ON, Canada
QSUD was boosted by LM MoS2 additive...
_________________________
'14 Chevrolet Tahoe
'15 Mazda CX-5

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#4507444 - 09/04/17 06:11 PM Re: QSUD/Castrol 0w20 2015 Mazda CX-5 2.5L [Re: yugrus]
pbm Offline


Registered: 04/19/04
Posts: 7646
Loc: New York
Originally Posted By: yugrus
QSUD was boosted by LM MoS2 additive...



Yes, I see that now....I missed it when I first glanced at your original post.
Even with the additional moly in the QSUD, the Castrol seemed to work better....but maybe the long highway run is the reason why...
_________________________
'Journalism is Dead'

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#4507447 - 09/04/17 06:16 PM Re: QSUD/Castrol 0w20 2015 Mazda CX-5 2.5L [Re: yugrus]
yugrus Offline


Registered: 04/06/04
Posts: 439
Loc: ON, Canada
Mazda recommends it's own Moly oil, or Castrol. Go figure...
_________________________
'14 Chevrolet Tahoe
'15 Mazda CX-5

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#4507448 - 09/04/17 06:17 PM Re: QSUD/Castrol 0w20 2015 Mazda CX-5 2.5L [Re: yugrus]
FZ1 Offline


Registered: 02/07/08
Posts: 4727
Loc: Texas
Edge has the Edge.

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#4507721 - 09/04/17 11:10 PM Re: QSUD/Castrol 0w20 2015 Mazda CX-5 2.5L [Re: yugrus]
PimTac Online   content


Registered: 03/04/17
Posts: 4647
Loc: Soviet State of Washington
Originally Posted By: yugrus
Mazda recommends it's own Moly oil, or Castrol. Go figure...



All automakers recommend a certain brand. That doesn't mean you have to use it. That brand pays for the advertising.
_________________________
2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter


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#4507769 - 09/05/17 05:24 AM Re: QSUD/Castrol 0w20 2015 Mazda CX-5 2.5L [Re: PimTac]
Matagonka Offline


Registered: 02/03/15
Posts: 471
Loc: NC
Originally Posted By: PimTac
Originally Posted By: yugrus
Mazda recommends it's own Moly oil, or Castrol. Go figure...



All automakers recommend a certain brand. That doesn't mean you have to use it. That brand pays for the advertising.


Yep!

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