Code:
Mercedes Benz 5.5L (M275) V-12 Twin Turbo
Mobil 1 0W/40 6,504 Miles
Previous Blackstone comments:
04/10/13: There's really no bad news to report for this first sample from your S600's V-12. Metals look great
here compared to universal averages, which are based on an oil run just half as long as your sample. Iron is
exceptional considering the longer-than-average oil run, as usually longer runs leave more iron in the oil.
The viscosity was half a shade low, but that wasn't the result of excessive fuel dilution and it's not hurting
anything, so we wouldn't worry about it too much. No water or insolubles were found, and the TBN was solid
at 3.2. Great engine and great report!
05/26/14: Another great report! You pushed a little longer on the oil this time around, so
there were some slight increases in a few metals (chrome, iron, copper), but the
other metals actually improved since last time. Since universal averages are based
on ~4,400 miles of oil use, and you're getting better-than-average wear on a much
longer oil run, we don't see any problems to report here! Your previous sample had
a slightly low viscosity, but that's back in line this time, and the TBN is still
strong at 3.3, so this oil can run longer. Try 11,000 miles next oil. Nice!
Blackstone Comments:
Thanks for the note about the oil life monitor. It looks like it sold you short this time because your
engine's wear metals are close to the same levels we were seeing in the past. Copper was the exception
since it dropped by about 50%, but that's not a metal that should track with oil use, so it's hard to say it read
lower because of the shorter interval. Maybe brass/bronze parts are just wearing exceptionally well now. No
matter, an improvement is always nice. The TBN was strong at 5.5, so try up to 9,000 miles again. The low
viscosity is harmless.
MI/HR on Oil 6,504 9,186 UNIT AVERAGES 8,946 UNIVERSAL AVERAGES
MI/HR on Unit 80,443 73,939 64,753
Sample Date 4/10/2015 05/26/14 04/10/13
Make Up Oil Added 0 qts 0 qts 0 qts
ALUMINUM 4 4 5 6 5
CHROMIUM 0 1 0 0 0
IRON 8 9 8 8 11
COPPER 4 9 7 8 7
LEAD 0 0 0 1 2
TIN 0 0 1 3 1
MOLYBDENUM 90 92 111 149 71
NICKEL 0 0 0 0 0
MANGANESE 1 2 1 1 1
SILVER 0 0 0 0 0
TITANIUM 0 0 0 0 0
POTASSIUM 3 5 4 4 3
BORON 147 96 102 63 117
SILICON 7 4 5 5 7
SODIUM 5 4 6 7 9
CALCIUM 3426 2800 2853 2333 2471
MAGNESIUM 30 32 35 44 37
PHOSPHORUS 943 902 929 942 891
ZINC 1150 1047 1108 1127 1017
BARIUM 1 0 0 0 0
should be
SUS Vis @210°F 64.6 70.6 65-76 64.6
cSt Vis @100°C 11.50 13.12 11.6-14.8 11.49
Flashpoint °F 385 415 >375 395
Fuel % <0.5 <0.5 <2.0 <0.5
Antifreeze % 0.0 0.0 0 0.0
Water % 0.0 0.0 <0.1 0.0
Insolubles % 0.2 0.2 <0.6 0.2
TBN 5.5 3.3 >1.0 3.2
TAN
ISO Code
Last edited:
but very very good though
