Mobil 1 AFE 0W20 - 5300 Miles - 2014 Mazda 6

[NeoNoggie]

Blackstone report for my Mazda 6. Bought it new, broke it in right, and am very happy with these results! The previous fill was MGMO 0w20, but I see no need to use that more expensive oil with these kinds of results from the AFE. I plan to do one more UOA on my current AFE fill to make sure its not a fluke, then just stick with it if it looks good. Do you guys think the oil has sheared too much? It's still within spec, but I'm not sure if it will be at 7500 miles of use.

Code:
Miles on Oil: 5300-----Brand: Mobil 1 0W-20 AFE

Miles on Car: 27,316---Car: 2014 Mazda 6

Make-up Oil: 0 quarts



Aluminum: 3

Chromium: 0

Iron: 5

Copper: 4

Lead: 0

Tin: 0

Molybdenum:141

Nickel: 0

Manganese: 0

Silver: 0

Titanium: 0

Potassium: 0

Boron: 76

Silicon: 8

Sodium: 2

Calcium: 1195

Magnesium: 702

Phosphorus:606

Zinc: 679

Barium: 0



SUS Visc @ 210F: 47.9

cSt Visc @ 100C: 6.63

Flashpoint (F): 390

Fuel:
Antifreeze: 0.0

Water: 0.0

Insolubles: 0.3

TBN: 6.1

 

[Shannow]

I think it looks good...

However it didn't stay in grade for a 0W20, dropping below the 6.9cst limit for that grade.

Doesn't seem to have hurt, and AFE in your case certainly isn't Robinson Crusoe when it comes to even the highly vaunted OEM 20s.

 

[CT8]

Still 20 wt and the oil with the tbn of 6.1 has lots of life in it. I would try 10,000 miles if you are running the same operating conditions. I am running 0w-30 in my 96 Toy Tacoma 4 cyl and the engine seems to never have run better {smooth and quiet}.

 

[Shannow]

Originally Posted By: CT8
Still 20 wt


So you are saying that 6.63 is somewhere between 6.9 and 9.3 ?

6.63 is clearly 16 grade, not 20...lost 25% of it's KV100 from new on the PDS, so who knows where the HTHS has gone (from 2.7), but you can guess where.

 

[CT8]

Unless I am reading this viscosity chart incorrectly http://www.bobistheoilguy.com/putting-the-simple-back-into-viscosity/

 

[Shannow]

Was changed 18 months ago, to reflect where the Japanese OEMs wanted to go, and acknowledging that the "spread" of 20 was far too great compared to the other ranges for the other viscosities allowing lubricants to "stay in grade" when they would have dropped a grade were they 30s or 40s (and spawning much BITOG lore)

 

[CT8]

Good catch and the update.
Features & Potential Benefits
Specs/Approvals
Tech Details

SAE Grade 0W-20
Viscosity (ASTM D 445)
cSt @ 40ºC 44.8
cSt @ 100ºC 8.7
Viscosity Index 173
Sulfated Ash, wt% (ASTM D874) 0.8
HTHS Viscosity, mPa•s at 150ºC (ASTM D4683) 2.7
Phosphorous (ASTM D4951) 0.065
Flash Point, ºC (ASTM D92) 224
Total Base Number (ASTM D2896) 8.8
MRV @ -40ºC (ASTM D4684) 9200
Density at 15.6ºC g/ml (ASTM D4052) 0.Sp
Specs from Mobil web site take the above post back and even though my Toyota runs smooth Seems this could be not so impressive as I thought.. The fuel dilution doesn't seem high.

 

[Y_K]

Where is CATERHAM and his claim "W20 oils don't shear down"?

 

[CT8]

Originally Posted By: Y_K
Where is CATERHAM and his claim "W20 oils don't shear down"?
It seems using the outdated charts they don't. Still seems strange

 

[demarpaint]

DI that might explain the thinning of the oil. As far as 20 grade oil not shearing, that IMO is a myth.

 

[Shannow]

The behaviour of the oils obviously hasn't changed...they've just got a grade below them that they can shear into now.

SAE committee acknowledged that the traditional spread of 20 was far broader than the other grades and needed tightening up.

Made for a funny overlap between 20 and 16 'though.

 

[Artem]

Do you have a 2.0L or the 2.5L Skyactiv under the hood?

 

[CT8]

Could thicken up with further miles . Maybe.

 

[NeoNoggie]

I'm in the United States, so our only option is the 2.5 liter unfortunately.

 

[147_Grain]

Originally Posted By: Y_K
Where is CATERHAM and his claim "W20 oils don't shear down"?

There's also fuel dilution to consider as well. 0W-20 weight oils use higher quality basestocks and typically don't shear like oils 10 - 15 years ago.

Type of engine plays a role too and those with timing chains tend to shear oils more than earlier engines with timing belts. Also driving style.

 

[vinu_neuro]

This is why it's wise to use a lab like Polaris that uses gas chromatography to measure fuel dilution.

I'd resample with a better lab and go to 0W-30 if necessary.

 

[Ram01]

A 30wt might be best for a DI motor the shearing scares me

 

[NeoNoggie]

Don't I need to stay with 0W-20 for warranty reasons?

 

[Dominic]

Originally Posted By: NeoNoggie
Don't I need to stay with 0W-20 for warranty reasons?


Yes. There is nothing wrong with 0W-20 either. You had 0 fuel dilution and the TBN is very strong. It's a bit thin, but the wear metals look perfectly fine. I think this shows how well AFE can do. A virgin sample shows AFE at 9.0cSt, and the MGMO is around 8.7. The Schedule 1 of 7500 mile or 6 month oil changes will suit your driving style well.

You can see how mine also went down almost a grade in 5800 miles.
http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3501447/2014_Mazda6_-_Mazda_MGMO_0W-20

 

[larry007]

The SAE move from 5.6 to 6.9 looks like just making room for the 16 weights coming in the future. I'll stick with the original spec for now. LOL, I wonder how happy the oil mfgrs. are?