Code:
OIL M1 0w40 Castrol Edge Pro TWS 10w60
MILES IN USE 5,920 7,754
MILES 57,028 51,108
SAMPLE TAKEN 07/14/14 12/13/13
ALUMINUM 5 4
CHROMIUM 0 0
IRON 11 8
COPPER 2 3
LEAD 1 0
TIN 0 0
MOLYBDENUM 64 48
NICKEL 0 0
MANGANESE 0 1
SILVER 0 0
TITANIUM 3 10
POTASSIUM 4 3
BORON 112 27
SILICON 6 4
SODIUM 5 5
CALCIUM 2648 2395
MAGNESIUM 32 57
PHOSPHORUS 806 796
ZINC 917 843
BARIUM 0 0
INSOLUBLES TR 0.2
WATER 0 0
FLASHPOINT ºF 375 425
SUS VIS 210ºF 70.9 83.5
cSt @ 212ºF 13.19 16.40
FUEL TR
TBN 5.1 3.4
TAN 6.3 3.4
Blackstone sez:
We did notice a slight increase in iron with this sample. You mentioned that you're running the engine hard, and a little extra iron can be a normal side effect of hard use. Other metals look great and this isn't enough iron to really worry about, so we're not too terribly concerned. There was a trace of fuel in this sample, but that's probably operational in nature and fuel isn't a major concern until it reads 2.0% of the sample or higher. The TBN read strong at 5.1 and the TAN was 6.3. Both readings are a little higher than normal, but still fine as far as we can see.
My thoughts:
The M1 0w40 seems to work well for this car, and could've gone much further than 6,000 miles. The iron is slightly elevated but everything else is fine so I agree that it's probably nothing. Considering how I drive the car to redline often coupled with the short-trip nature of my driving, and how high-strung the engine is to begin with, the numbers look good.
Fuel was probably elevated since I didn't drive it very far to get the oil change that morning and it was probably running a tad rich. The car has a very aggressive cold idle to help warm the pre-cats.
The only reason I changed it was because the CBS indicated I needed a change (it thought this was still the original TWS with 13,674 mi on it). I have opted to do "intermediate" changes at the halfway point between BMW's recommended 15k intervals. At this rate, I will probably change it again in the late winter.
OIL M1 0w40 Castrol Edge Pro TWS 10w60
MILES IN USE 5,920 7,754
MILES 57,028 51,108
SAMPLE TAKEN 07/14/14 12/13/13
ALUMINUM 5 4
CHROMIUM 0 0
IRON 11 8
COPPER 2 3
LEAD 1 0
TIN 0 0
MOLYBDENUM 64 48
NICKEL 0 0
MANGANESE 0 1
SILVER 0 0
TITANIUM 3 10
POTASSIUM 4 3
BORON 112 27
SILICON 6 4
SODIUM 5 5
CALCIUM 2648 2395
MAGNESIUM 32 57
PHOSPHORUS 806 796
ZINC 917 843
BARIUM 0 0
INSOLUBLES TR 0.2
WATER 0 0
FLASHPOINT ºF 375 425
SUS VIS 210ºF 70.9 83.5
cSt @ 212ºF 13.19 16.40
FUEL TR
TBN 5.1 3.4
TAN 6.3 3.4
Blackstone sez:
We did notice a slight increase in iron with this sample. You mentioned that you're running the engine hard, and a little extra iron can be a normal side effect of hard use. Other metals look great and this isn't enough iron to really worry about, so we're not too terribly concerned. There was a trace of fuel in this sample, but that's probably operational in nature and fuel isn't a major concern until it reads 2.0% of the sample or higher. The TBN read strong at 5.1 and the TAN was 6.3. Both readings are a little higher than normal, but still fine as far as we can see.
My thoughts:
The M1 0w40 seems to work well for this car, and could've gone much further than 6,000 miles. The iron is slightly elevated but everything else is fine so I agree that it's probably nothing. Considering how I drive the car to redline often coupled with the short-trip nature of my driving, and how high-strung the engine is to begin with, the numbers look good.
Fuel was probably elevated since I didn't drive it very far to get the oil change that morning and it was probably running a tad rich. The car has a very aggressive cold idle to help warm the pre-cats.
The only reason I changed it was because the CBS indicated I needed a change (it thought this was still the original TWS with 13,674 mi on it). I have opted to do "intermediate" changes at the halfway point between BMW's recommended 15k intervals. At this rate, I will probably change it again in the late winter.
