2008 6MT (702/703 rod bearings)
4945 miles on the oil (BMW TwinPower Turbo 10W-60)
95449 miles on the engine
Follow-up from
this.
Two road trips, a few blasts at the Tail of the Dragon, one tank of no-name non-ethanol gas, and one Techron treatment on this run. Also caught and fixed a pre-cat exhaust leak on one bank near the end, so there's probably some sub-optimal running as well (might explain the fuel dilution).
No idea where the silicon has come from. Maybe the VC gasket change I did just before this oil went in?
Copying the numbers here because Polaris's reports are kind of annoying to read:
Iron - 7
Chromium - 0
Nickel - 0
Aluminum - 2
Copper - 2
Lead - 0
Tin - 0
Cadmium - 0
Silver - 0
Vanadium - 0
Silicon - 23
Sodium - 2
Potassium - 1
Titanium - 0
Molybdenum - 49
Antimony - 0
Manganese - 0
Lithium - 0
Boron - 52
Magnesium - 30
Calcium - 2490
Barium - 0
Phosphorus - 840
Zinc - 957
Fuel Dilution - 1.8% (GC)
Soot - <0.1% by vol.
Water - <0.1% by vol. (FTIR)
Viscosity @ 100ยบ C - 18.3 cSt
TBN - 5.26
Oxidation - 11
Nitration - 10
Particle Quantifier (PQ) Index - 12