2008 BMW M3, BMW TwinPower Turbo 10W-60, 4966 mi

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Oct 20, 2005
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Previous UOA here. 125133 miles on the engine at the time of sampling.

2x 2-day track events on this oil (NJMP Thunderbolt, intermediate pace, street tires); one event at the beginning of the OCI, and one at the end.

Aluminum is back down to previous levels and all other wear markers remain low, though fuel remains high.

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 - 4
Copper - 2
Lead - 0
Tin - 1
Cadmium - 0
Silver - 0
Vanadium - 0

Particle Quantifier (PQ) Index - 11


Contaminant Metals

Silicon - 5
Sodium - 6
Potassium - 1


Multi-Source Metals

Titanium - 0
Molybdenum - 70
Antimony - 0
Manganese - 0
Lithium - 1
Boron - 56


Additive Metals

Magnesium - 25
Calcium - 2744
Barium - 0
Phosphorus - 937
Zinc - 1006


Other Contaminants

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


Fluid Properties

Viscosity @ 100º C - 18.2 cSt
TBN - 5.24
Oxidation - 13
Nitration - 12
 

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d00df00d

Thread starter
Joined
Oct 20, 2005
Messages
11,857
Location
PA
3qts makeup oil in 5k is a lot. Leaking, using? How do the plugs look?
Leaking and using. Not sure how much of each. Haven’t seen the plugs in a bit.

Don’t forget there were 4 track days on this oil.
 
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