I've been delinquent in sharing my UOA data... FYI dealer pressure tested the cooling system twice, once overnight and had no leak-down. Coolant "disappearing" has slowed, and I only added 8oz or so over the last year. High potassium is normal for these vehicles. I plan on continuing 10k OCI, but my wife's commute has been cut in half.
Code:
All Samples Castrol SLX Professional LL03 5W-30 VW50700
Miles on oil 6,033 7,544 7,426 9,556
Miles on unit 6,033 22,684 30,110 39,666
Date 10/4/09 7/25/10 11/18/10 5/7/11
ALUMINUM 24 37 28 33
CHROMIUM 2 2 2 2
IRON 62 71 52 75
COPPER 32 10 7 9
LEAD 1 1 0 1
TIN 0 1 0 4
MOLYBDENUM 2 6 7 4
NICKEL 1 1 1 1
MANGANESE 6 2 1 1
SILVER 0 0 0 0
TITANIUM 0 2 1 1
POTASSIUM 61 63 48 41
BORON 2 1 1 1
SILICON 27 6 4 5
SODIUM 4 4 4 5
CALCIUM 1699 1756 1574 1515
MAGNESIUM 7 8 7 7
PHOSPHORUS 697 806 748 736
ZINC 899 1280 962 899
BARIUM 0 0 0 0
SUS VIS 210ºF 66.4 67.2 68.8 67.5
cSt @ 212ºF 11.98 12.22 12.64 12.30
FLASHPOINT ºF 440 420 425 400
Fuel
Antifreeze ? POS ? ?
WATER 0 0 0 0
INSOLUBLES 0.1 0.3 0.3 0.3
TBN 4.4 2.6 1.7
Code:
All Samples Castrol SLX Professional LL03 5W-30 VW50700
Miles on oil 6,033 7,544 7,426 9,556
Miles on unit 6,033 22,684 30,110 39,666
Date 10/4/09 7/25/10 11/18/10 5/7/11
ALUMINUM 24 37 28 33
CHROMIUM 2 2 2 2
IRON 62 71 52 75
COPPER 32 10 7 9
LEAD 1 1 0 1
TIN 0 1 0 4
MOLYBDENUM 2 6 7 4
NICKEL 1 1 1 1
MANGANESE 6 2 1 1
SILVER 0 0 0 0
TITANIUM 0 2 1 1
POTASSIUM 61 63 48 41
BORON 2 1 1 1
SILICON 27 6 4 5
SODIUM 4 4 4 5
CALCIUM 1699 1756 1574 1515
MAGNESIUM 7 8 7 7
PHOSPHORUS 697 806 748 736
ZINC 899 1280 962 899
BARIUM 0 0 0 0
SUS VIS 210ºF 66.4 67.2 68.8 67.5
cSt @ 212ºF 11.98 12.22 12.64 12.30
FLASHPOINT ºF 440 420 425 400
Fuel
Antifreeze ? POS ? ?
WATER 0 0 0 0
INSOLUBLES 0.1 0.3 0.3 0.3
TBN 4.4 2.6 1.7