Hi all,
I am trying Mobil 1 SuperSyn 0w-40 in my 1987 300D. This is 3.0L 148 HP engine indirect injected (prechambers) with 9 qt sump. At the time of the sample the engine had 271,000 miles.
miles on oil 7911
miles on unit 271063
visc 100C 13.89
TBN 9.78
Fe 40
Cr 2
Pb 2
Cu 1
Sn 0
Al 6
Ni 0
Si 6
B 71
Na 17
Mg 145
Ca 3121
P 997
Zn 1108
Mo 42
Glycol neg
H20 0
Fuel Soot 0.82%
Oxd% 19
Nox% 17
I have taken many analysis on this engine, running the oil between 6500-9500 miles. For this sample, Iron is twice as high as usual from all other samples from Mobil 15w50, Delvac, etc. Sodium seems high for some reason, so I am wondering about an induction leak. Soot is 1/2 the usual amount, so I am wondering why. I haven't touched the engine. Does cold weather have anything to do with it? Only thing I've noticed is small exhaust leak in a flex pipe near the turbo/manifold.
Comments, opinions welcome!
Thanks,
I am trying Mobil 1 SuperSyn 0w-40 in my 1987 300D. This is 3.0L 148 HP engine indirect injected (prechambers) with 9 qt sump. At the time of the sample the engine had 271,000 miles.
miles on oil 7911
miles on unit 271063
visc 100C 13.89
TBN 9.78
Fe 40
Cr 2
Pb 2
Cu 1
Sn 0
Al 6
Ni 0
Si 6
B 71
Na 17
Mg 145
Ca 3121
P 997
Zn 1108
Mo 42
Glycol neg
H20 0
Fuel Soot 0.82%
Oxd% 19
Nox% 17
I have taken many analysis on this engine, running the oil between 6500-9500 miles. For this sample, Iron is twice as high as usual from all other samples from Mobil 15w50, Delvac, etc. Sodium seems high for some reason, so I am wondering about an induction leak. Soot is 1/2 the usual amount, so I am wondering why. I haven't touched the engine. Does cold weather have anything to do with it? Only thing I've noticed is small exhaust leak in a flex pipe near the turbo/manifold.
Comments, opinions welcome!
Thanks,