Code:
OIL Castrol SAF-XJ 75w140 + FM
MILES IN USE 36,200
MILES 64,500
SAMPLE TAKEN 3/29/16
ALUMINUM 1
CHROMIUM 3
IRON 352
COPPER 1
LEAD 0
TIN 1
MOLYBDENUM 67
NICKEL 1
MANGANESE 9
SILVER 2
TITANIUM 0
POTASSIUM 2
BORON 160
SILICON 288
SODIUM 2
CALCIUM 5
MAGNESIUM 0
PHOSPHORUS 2562
ZINC 15
BARIUM 1
SUS Visc @ 210F 117.2
cSt Visc @ 100C 24.32
FLASHPOINT ºF 390
Fuel % N/A
Antifreeze % N/A
Water % 0
Insolubles % 0.2
TBN untested
TAN untested
Gear oil was in there for about 46 months and saw a bunch of autocross events, two track days, and plenty of WOT. The car is stored over the winters. It's also not really a DD since I typically fly during the week. The differential is a GKN Visco-Lok unit with integrated speed-sensitive LSD.
I have never had the rear differential fluid analyzed since it's the first change I did while owning the car. BMW specifies changing it every third oil change, but Blackstone says things look on-par other than slightly high iron. They did call out the elevated silicon but said it's likely an anti-foaming agent or something like that. The high phosphorous is likely the additional FM.
Also worth noting that this is Castrol SAF-XJ but has extra friction modifier (FM) per BMW's specification. Apparently there were complaints about chatter in the first year the car was out, so the fluid was revised with extra FM. I opted to stick with the standard FM dose when I had it changed, so it now has Castrol Syntrax LS 75w140, the new name for SAF-XJ. I think every third oil change is fine for me given my relatively low annual mileage.
OIL Castrol SAF-XJ 75w140 + FM
MILES IN USE 36,200
MILES 64,500
SAMPLE TAKEN 3/29/16
ALUMINUM 1
CHROMIUM 3
IRON 352
COPPER 1
LEAD 0
TIN 1
MOLYBDENUM 67
NICKEL 1
MANGANESE 9
SILVER 2
TITANIUM 0
POTASSIUM 2
BORON 160
SILICON 288
SODIUM 2
CALCIUM 5
MAGNESIUM 0
PHOSPHORUS 2562
ZINC 15
BARIUM 1
SUS Visc @ 210F 117.2
cSt Visc @ 100C 24.32
FLASHPOINT ºF 390
Fuel % N/A
Antifreeze % N/A
Water % 0
Insolubles % 0.2
TBN untested
TAN untested
Gear oil was in there for about 46 months and saw a bunch of autocross events, two track days, and plenty of WOT. The car is stored over the winters. It's also not really a DD since I typically fly during the week. The differential is a GKN Visco-Lok unit with integrated speed-sensitive LSD.
I have never had the rear differential fluid analyzed since it's the first change I did while owning the car. BMW specifies changing it every third oil change, but Blackstone says things look on-par other than slightly high iron. They did call out the elevated silicon but said it's likely an anti-foaming agent or something like that. The high phosphorous is likely the additional FM.
Also worth noting that this is Castrol SAF-XJ but has extra friction modifier (FM) per BMW's specification. Apparently there were complaints about chatter in the first year the car was out, so the fluid was revised with extra FM. I opted to stick with the standard FM dose when I had it changed, so it now has Castrol Syntrax LS 75w140, the new name for SAF-XJ. I think every third oil change is fine for me given my relatively low annual mileage.