Here is the latest UOA from my BMW, no racing, auotcross on this interval. Almost all in town miles here in Houston, including the warm winter months. I did add 4 oz of LC 20 about 500 miles before the oil change. The spark plugs were changed about 4 months ago to NGK Iridium BKR6EIX.
Still running Castrol Syntec 0w-30.
This interval on the right.
Code:
Miles on oil 5011 5000 4300 5958 4514 5347 5017
Total miles 21130 26100 31407 37365 41879 47226 52245
Date 5/17/05 10/17/05 3/31/06 6/19/06 3/05/07 6/16/07 3/29/08
Make up oil 0 0 0 0 0 0 0
Oil Brand BMW Castrol Castrol BMW Castrol Castrol Castrol
Weight 5w-30 0w-30 0w-30 5w-30 0w-30 0w-30 0w-30
Filter BMW Mann BMW BMW Mann Mann Mann
ALUMINUM 4 2 2 2 2 2 4
CHROMIUM 1 0 0 0 0 0 0
IRON 9 7 6 4 8 6 11
COPPER 28 22 15 18 22 8 15
LEAD 2 2 2 1 1 1 1
TIN 0 1 0 0 1 1 0
MOLYBDENUM 124 19 4 104 16 4 3
NICKEL 1 0 0 0 0 0 0
MANGANESE 3 1 1 1 1 1 2
SILVER 0 0 0 0 0 0 0
TITANIUM 0 0 0 0 0 0 0
POTASSIUM 9 1 6 1 2 0 8
BORON 38 9 3 21 4 2 3
SILICON 5 3 3 3 3 2 4
SODIUM 2 4 3 5 3 3 4
CALCIUM 3446 2125 1704 2463 2702 2985 1864
MAGNESIUM 18 311 455 83 129 147 448
PHOSPHORUS 853 748 781 662 737 782 872
ZINC 1050 889 964 847 878 1001 1115
BARIUM 0 0 0 0 0 0 0
SUS @ 210F 65.6 62.5 63.2 64.1 63.8 65.8 64.2
cSt @ 100C 11.76 10.91 11.11 11.35 11.27 11.82 11.38
Flashpoint F 375 375 325 415 360 395 380
Fuel %
Antifreeze % 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Water % 0.0 0.0 tr 0.0 0.0 0.0 0.0
Insolubles % 0.3 0.3 0.2 0.3 0.2 0.2 0.2
TBN 1.8 4.0 4.7 3.2 2.9 2.6 2.9
Blackstone comments-
All wear increased in this sample, though nothing went high enough to be considered a problem.
Copper is most out of line at a little more than twice averages, though it has read higher than this in the
past. We're guessing you drove a little harder this time around -- maybe more city driving or idling, or
maybe some racing. That would account for the increased metals. Like we said, nothing here shows a
problem, as all metals are still around average for this type of BMW. The TBN read 2.9, still active additive
remaining. The trace of fuel is okay & isn't hurting anything.
Still running Castrol Syntec 0w-30.
This interval on the right.
Code:
Miles on oil 5011 5000 4300 5958 4514 5347 5017
Total miles 21130 26100 31407 37365 41879 47226 52245
Date 5/17/05 10/17/05 3/31/06 6/19/06 3/05/07 6/16/07 3/29/08
Make up oil 0 0 0 0 0 0 0
Oil Brand BMW Castrol Castrol BMW Castrol Castrol Castrol
Weight 5w-30 0w-30 0w-30 5w-30 0w-30 0w-30 0w-30
Filter BMW Mann BMW BMW Mann Mann Mann
ALUMINUM 4 2 2 2 2 2 4
CHROMIUM 1 0 0 0 0 0 0
IRON 9 7 6 4 8 6 11
COPPER 28 22 15 18 22 8 15
LEAD 2 2 2 1 1 1 1
TIN 0 1 0 0 1 1 0
MOLYBDENUM 124 19 4 104 16 4 3
NICKEL 1 0 0 0 0 0 0
MANGANESE 3 1 1 1 1 1 2
SILVER 0 0 0 0 0 0 0
TITANIUM 0 0 0 0 0 0 0
POTASSIUM 9 1 6 1 2 0 8
BORON 38 9 3 21 4 2 3
SILICON 5 3 3 3 3 2 4
SODIUM 2 4 3 5 3 3 4
CALCIUM 3446 2125 1704 2463 2702 2985 1864
MAGNESIUM 18 311 455 83 129 147 448
PHOSPHORUS 853 748 781 662 737 782 872
ZINC 1050 889 964 847 878 1001 1115
BARIUM 0 0 0 0 0 0 0
SUS @ 210F 65.6 62.5 63.2 64.1 63.8 65.8 64.2
cSt @ 100C 11.76 10.91 11.11 11.35 11.27 11.82 11.38
Flashpoint F 375 375 325 415 360 395 380
Fuel %
Antifreeze % 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Water % 0.0 0.0 tr 0.0 0.0 0.0 0.0
Insolubles % 0.3 0.3 0.2 0.3 0.2 0.2 0.2
TBN 1.8 4.0 4.7 3.2 2.9 2.6 2.9
Blackstone comments-
All wear increased in this sample, though nothing went high enough to be considered a problem.
Copper is most out of line at a little more than twice averages, though it has read higher than this in the
past. We're guessing you drove a little harder this time around -- maybe more city driving or idling, or
maybe some racing. That would account for the increased metals. Like we said, nothing here shows a
problem, as all metals are still around average for this type of BMW. The TBN read 2.9, still active additive
remaining. The trace of fuel is okay & isn't hurting anything.
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