QSUD/Castrol 0w20 2015 Mazda CX-5 2.5L

[yugrus]

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
Mn 0.2

Ni 0
Ti 0 26

Ag 0
Al 7.2 5

Pb 0
Cu 1.9 3

Sn 0.1 0.1

Sb 1.6

V 0.2


Si 13 11

Na 3.7 4

Ka 0.4 0.4



B 222 318

Ba 0.4
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 %


Visc @ 100C 6.5 7.1

Base Number (mgKOH/g) 5.9

 

[danez_yoda]

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.

 

[yugrus]

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.

 

[pbm]

691 PPM of moly in QSUD....WOW....that's a lot of moly.....

 

[yugrus]

QSUD was boosted by LM MoS2 additive...

 

[pbm]

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...

 

[yugrus]

Mazda recommends it's own Moly oil, or Castrol. Go figure...

 

[FZ1]

Edge has the Edge.

 

[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.

 

[Matagonka]

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!