2008 BMW M3, BMW TwinPower Turbo 10W-60, 5052 mi

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Previous UOA here. 120167 miles on the engine at the time of sampling.

1 track day on this oil (NJMP, novice pace, street tires), near the end of the OCI. I had to top off with 1L shortly after that track day, so these numbers are probably mitigated slightly by that.

Tempted to blame the rise in Al on the track day. However, the number is still really low and no other potential wear indicators have changed. #ShrugLife

Big bump in fuel dilution!

In the pic, fuel dilution in a previous sample is blanked out because it turned out not to be reliable.


Wear Metals

Iron - 8
Chromium - 0
Nickel - 0
Aluminum - 7
Copper - 2
Lead - 1
Tin - 1
Cadmium - 0
Silver - 0
Vanadium - 0

Particle Quantifier (PQ) Index - 11


Contaminant Metals

Silicon - 5
Sodium - 2
Potassium - 0


Multi-Source Metals

Titanium - 0
Molybdenum - 52
Antimony - 3
Manganese - 0
Lithium - 0
Boron - 61


Additive Metals

Magnesium - 38
Calcium - 2591
Barium - 0
Phosphorus - 857
Zinc - 1038


Other Contaminants

Fuel Dilution - 2.4% (GC)
Soot - <0.1% by vol.
Water - <0.1% by vol. (FTIR)


Fluid Properties

Viscosity @ 100º C - 17.6 cSt
TBN - 4.72
Oxidation - 12
Nitration - 11
 

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