1996 MB E300D - M1 T&SUV 5w-40 12824mi; 199k total

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JHZR2

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Yet another... our 96 MB E300D. Ithas just under 200k at this change. Yes, we skipped a few UOAs in between.

Anyway, a bit disapointing... soot seems up and thus wear is up a bit too. No LC, #132 or similar used here. Apparently there was a fair amount of stop and go traffic driving on this interval... as well as winter driving. It still returns between 32-36 MPG, with a high of 38.

Anyway, here is current (left) as well as older ones to the right:

Code:




Sample Date 6/22/08 2/27/05 9/11/04

Unit Age 199742m 157087m 149127m

Comp Age 199742m 157087m 149127m

Time on Oil 12824m 7960m 3867m

Time on Fltr 12824m 7960m 3867m

Oil Maint. Changed Changed Changed

Fltr Maint. Changed Changed Changed

Fluid Mobil1 Truck&SUV (Delvac 1) 5w-40 Mobil1 Truck&SUV (Delvac 1) 5w-40 Mobil1 Truck&SUV (Delvac 1) 5w-40



Fe 45 27 13

Cr 3.4 1.4 1

Ni 0.7 0.7 0.1

Ti 0 0.2 0.1

Ag 0 0 0

Al 4.8 3.5 2.6

Pb 0.5 1.1 0

Cu 1.5 0.9 0.6

Sn 0.4 1.2 0

Si 6.8 6.3 5.8

Na 1.3 1.1 1.5

K 0 0 1.4

B 40 44 36

Ba 0 0 2.2

Mo 2.2 2 2.4

Mg 457 426 347

Ca 2404 2264 2029

P 1173 1185 973

Zn 1308 1228 1073

S 4158 3651 3417

Cd 0 0 0

Mn 0.3 0.3 0.2

V 0 0 0

Sb 0 0 1.1

Soot(%) 0.5 0.3 0.2

Oxid(PA) 63 80 70

Nitr(PA) 91 40 25

Sulf(PA) 56 0 0

ZDDP -0.06 -0.06 0

TBN 8.23 10 10.2

Kv@100°C 13.2 13.6 13.2

White Metal NONE NONE NONE

Babbitt NONE NONE NONE

Precipitate NONE NONE NONE

Silt NONE NONE NONE

Debris NONE NONE NONE

Dirt NONE NONE NONE

Appearance NORML NORML NORML

Odor NORML NORML NORML

H2O(Emul) NEG NEG NEG

H2O(Free) NEG NEG NEG
 
Hi,
JHZR2 - This is an excellent report. The uptake rate for wear metals is outstanding, the TBN is great and viscosity has been consistent. IMO it is always a good idea to obtain a TAN for diesel engines

This lubricant will handle soot at a much greater level than most lubricants and in any engine family too

Your report is excellent and IMO the lubricant could have remained there much longer
 
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Thanks!

That is the goal... its more or less only a highway car, so Im hoping to do over a year, maybe 20k miles next...
 
Hi,
JHZR2 - The UOAs from my Porsche 32v V8 (M28 engine) were consistently indicating a two year OCI was quite feasible - almost regardless of the distance

The greatest distance I went in one OC1 (1 year) was around 13k miles - I calculated that the lubricant was capable of another period about the same before changing

This was consistent over many OCIs and is the same with my
Boxster

In my Series 60 Detroits in City work I could only get around 12 months (40kkms) due to soot contamination (4%)
 
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Doug Hillary,

What did you use as a condemnation limit for TAN? I've heard it is a good rule of thumb to change out the oil when the TAN/TBN "equalize", (i.e, approach the same number), but would like to know what you used for limits.

Thanks in advance,

REDDOG
 
Hi,
REDDOG - The highest TAN (one truck) was 7 and it's lowest TBN (D4739) was 2

The average of all TANs was 6 and the lowest TBN was 3

Detroit Diesel's condemnation limits are 1 (D4739) or 1/3rd of new lubricant. No TAN is given. Delvac 1 5W-40 had a TBN of around 11

I used 1 as my "base line" TBN (and 8 for TAN) - however the limits for Soot or Iron were always reached first even when using a centrifuge cleaner

I always found that by getting both TAN and TBN I could detect some "irregularities" perhaps coming from the Labs I used (Mobil and Castrol)
 
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