Previous UOA here. Now at 90504 miles on the engine.
Did valve cover gaskets shortly before this drain, so that's probably where the Si is coming from (silicone sealant).
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 (it was 0 last time).
Nice to see fuel dilution down somewhat. Still don't like it at that level, though.
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 - Water -
Viscosity @ 100º C - 18.3 cSt
TBN - 4.00
Oxidation - 13
Nitration - 11
Particle Quantifier (PQ) Index - 13
Did valve cover gaskets shortly before this drain, so that's probably where the Si is coming from (silicone sealant).
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 (it was 0 last time).
Nice to see fuel dilution down somewhat. Still don't like it at that level, though.
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 - Water -
Viscosity @ 100º C - 18.3 cSt
TBN - 4.00
Oxidation - 13
Nitration - 11
Particle Quantifier (PQ) Index - 13