What Numbers say

dwayneMember

Can anyone tell me what this could be. I have an Oil Bypass filter on this Truck the oil has approx. 71000 miles on it and my numbers have jumped. Have in shop now having injector checked and possiby changed. I had the air comp. changed in april. Going to tell the shop to change the oil and all filters also. I am mainly worried about my IRON, LEAD, and POTASSIUM. VIS CS was hig Due to addative in Feb.I will not be putting it back in.

This is 6 samples in order nov 05 dec 05 feb 06 mar 06 may 06 june 06 Mobile delvac 15w40

Iron 5 11 39 58 55 82
Chrom 1 2 5 7 6 9
Nickl 1 1 1 1 1 1
Alum 1 1 2 4 1 5
Lead 1 1 8 24 25 38
copper 1 1 2 4 3 7
tin 1 1 1 1 1 1
silver 1 1 1 1 1 1
Titanium1 1 1 1 1 1
silicon 5 6 7 7 9 7
boron 51 49 35 35 26 27
sodium 4 4 6 9 9 14
Potas. 10 10 13 29 10 29
moly 42 43 46 56 40 39
Phosphorus 1447 1351 1244 1171 1069 1151
zinc 1476 1303 1566 1608 1346 1624
calcium 2370 2490 2791 2590 2498 2689
barium 10 10 10 10 10 10 10
Magnes.507 486 504 506 503 511
antimony30 30 30 30 30 30
vanadium1 1 1 1 2 1 2

Fuel soot .02 .04 1.8 1.7 1.8 2.5
vis cs 14.4 15.1 19.4 19.5 19.0 20.4

7/9/069:04 AM

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jackchangMember

Fuel soot and Viscosity jump high at 3rd sample(Feb 06 sample). I think that's the problem. I guess:
1. Engine combustion got poor( injector problem ?? or other reason), made a lot of soot.
2. Oil "thicken" by high soot, viscosity increased.
3. Engine component wear increased by high soot. To make the thing worse, antiwear additive in oil depleted ( absorbed by soot particle). With less protection from antiwear additive, engine component worn faster. So you get higher and higher Fe,Cr,Pb,Cu.

The book "Oil analysis basic" by Jim Fitch (Noria)has very useful information about soot problem.
Hope this help.

9/19/062:13 AM

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danamitMember

Dear Dwayne
Do you have the TAN and TBN values?
My impression is that the engine is OK but the oil running too many hours.
Dan

9/26/062:04 PM

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