M1 5w30 SL+LC 9766km '04 Suzuki Aerio 2.3L

[yugrus]

This is my first and last UOA with M1 5w30 SuperSyn (not EP).
All the analyses had been done by WearCheck Canada in Mississauga.

The engine is 4-cyl DOHC, chain- driven cams.
The oil had been in use for four month, from Nov 10, 2005 to March 11, 2006. There were no temperature extremes this winter, unlike last year's OCI on GC.

No oil makeup during either OCIs. LC every 1000mi.
Amsoil SDF-10 oil filter. Stock paper air filter, changed about 30k km ago.

I drive about 70% highway at as low speed as possible, under 100km/h. I am very light on throttle.

Prior to this run I've had two 5k km runs on the same oil.

code:

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Oil M1 5w30SS GC GC GC

Sample Date 3/11/2006 6/18/2005 2/26/2005 12/30/2004

Unit Age 74713k 50000k 40000k 30200k

Component Age 74713k 50000k 40000k 30200k

Time on Fluid 9766k 10000k 5000k 5000k

Time on Filter 9766k 10000k 5000k 5000k

Fluid Maint Changed Changed Changed Changed

Filter Maint Changed Changed Changed Changed

Wear NORMAL NORMAL NORMAL NORMAL

Contamination NORMAL NORMAL NORMAL NORMAL

Fluid ATTENTION NORMAL NORMAL NORMAL

Iron (Fe) 4.1 4 3.2 3.4

Chromium (Cr) 0.2 0 0.2 0.1

Nickel (Ni) 0 0 0 0

Titanium (Ti) 0.1 0 0.1 0.1

Silver (Ag) 0.1 0 0.3 0.3

Aluminum (Al) 3.6 1.6 2.1 1.7

Lead (Pb) 2.2 0.2 1 0.1

Copper (Cu) 2 5.8 4.2 3.8

Tin (Sn) 0 0 0 0

Silicon (Si) 7 6.8 5.5 5.7

Sodium (Na) 4.2 0.5 1.8 0.6

Potassium (K) 0.3 0 0.6 0

Boron (B) 97 0.9 3.3 5.4

Barium (Ba) 0.1 0 0.2 0.2

Molybdenum (Mo) 59 0.3 0.7 2.1

Magnesium (Mg) 16 118 119 117

Calcium (Ca) 2488 2620 2771 3010

Phosphorus (P) 736 670 733 771

Zinc (Zn) 799 817 874 891

Sulfur (S) 1852 2601 2846 2654

Manganese (Mn) 0.9 1.2 1.3 1.6

Vanadium (V) 0.1 0 0.1 0

Oxid(PA) 68 56 50 53

Nitr(PA) 53 40 36 36

Sulf(PA) 74 41 38 49

TAN 2.91

TBN 4.63

Kv@100°C 10 11.6 12.1 12.4

White Metal NONE NONE NONE NONE

Babbitt NONE NONE NONE NONE

Precipitate NONE NONE NONE NONE

Silt NONE NONE NONE NONE

Debris NONE VLITE NONE NONE

Dirt NONE NONE NONE NONE

Appearance NORML NORML NORML NORML

Odor NORML NORML NORML NORML

H2O(Emul) NEG NEG NEG NEG

H2O(Free) NEG NEG NEG NEG

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I have to call WearCheck to find out why they performed TAN instead of TBN analysis. May be that's because the oil already became acidic and was pretty much shot before I changed it?

I think I'm done with M1. I realize that the chemistry is very different with GC, and I don't mind a change in additive elements distribution. Although increased numbers for Al and Pb (but not iron) does not impress me very much. Although copper decreased...
These numbers are rather small, but I'd like them to be within GC performance range.

Then again, this TAN instead of TBN.

The viscosity @100C is right on the money which makes me wonder... Did it shear down and then thicken up? I know, too much BITOG reading

Interesting that this UOA did not show elevated iron. I thought it was M1's signature.

I'm done with M1 after current run (for 5k km, no more) because it did not provide any advantage over green GC which I have plenty of. The engine has been noticeably nosier, particularly when cold. Somehow my confidence in M1 protection for valvetrain and bearings diminishes.

Next thing will be Havoline 5w30 in fall. I got 8 bottles for free with PartSource coupon, and I'm very curious about its performance.

Update:
I've just talked to the lab, and the technician puzzled me with his reply why he performed TAN instead of TBN. He said that TBN means nothing for gasoline engine oil and any direct comparison with my previous UOA is useless.

Makes me wonder...

[ March 15, 2006, 02:31 PM: Message edited by: yugrus ]

 

[Pablo]

Your wear metals are at the noise level. Your engine throws so little metal with either oil, comparisons are difficult. The difference in lead is so small this could be accounted for easily by driving or weather or fuel...

I don't know why they did a TAN.

Havoline will be interesting.

 

[Al]

Yea, great numbers, almost no difference between Mobil and GC. I don't think Mobil 1 thins out and then thickens up. It just gets very very slowly thinner. Mobil 5W-30 is pretty close to 10W-30, The only difference may be the color of the botle.

 

[ShortBuSX]

Thanks for posting your Aerio UOA Yuri!

BTW whats this mean? "Fluid ATTENTION"?

 

[yugrus]

Thank you all. The lab is currently working on TBN. I hope to get results online by the end of the day. If not- then tomorrow.

This UOA took a little bit longer (4 days instead of normal one). From what I can tell from the online progress tracking, they stuck with TAN by machine test. All other tests were done in one day.

BTW, for those who wonder, they performed the following analyses:
- Infra-red
- ICP-AESpectrometric
- Viscosity @100C
- Visual screening
- TAN by machine
- TAN by titration
- TBN (still IN LAB)

quote:

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BTW whats this mean? "Fluid ATTENTION"?

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They did not realize that this was different oil. The system indicated that additive values ( for B, Mo, Mg, S) did not match averages for GC and that triggered the warning.

 

[yugrus]

Update:

The TBN turned out to be 5.09. To me, it is either VERY impressive, or something isn't quite right here. WearCheck uses D4739 method...
So not too bad for M1, after all. I still like GC more

 

[yugrus]

Particle Count: A small update.
I've just received hard copies of the results and it appears that they actually did a particle count. It is linear logarithmic graph, and the extreme values are:

20um - 650
10um - 5000

Does this tell anything about how good Amsoil filter does its job?