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      07-09-2019, 06:27 PM   #1026
IamFODI
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Drives: 2008 E90 M3 6MT
Join Date: Dec 2018
Location: SE PA

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2008 6MT
7136 miles on the oil
90504 miles on the engine

Follow-up from this.

Did valve cover gaskets shortly before this drain, so that's probably where the Si is coming from.

Pb is down as expected for the second oil change after the rod bearing job. Hoping that copper number is just a blip or something...

Copying the numbers here because Polaris's reports are kind of annoying to read:


Iron - 11
Chromium - 0
Nickel - 0
Aluminum - 10
Copper - 3
Lead - 1
Tin - 0
Cadmium - 0
Silver - 0
Vanadium - 0
Silicon - 15
Sodium - 5
Potassium - 3
Titanium - 0
Molybdenum - 51
Antimony - 0
Manganese - 0
Lithium - 0
Boron - 49
Magnesium - 27
Calcium - 2503
Barium - 0
Phosphorus - 818
Zinc - 909

Fuel Dilution - 1.3% (GC)
Soot - <0.1% by vol.
Water - <0.1% by vol. (FTIR)

Viscosity @ 100º C - 18.3 cSt
TBN - 4.00
Oxidation - 13
Nitration - 11

Particle Quantifier (PQ) Index - 13
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