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  #1  
Old 06-28-2002, 09:43 AM
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Join Date: Nov 2000
Location: SW Chicago Suburbs, IL
Posts: 263
Need Help with Oil Analysis Results

This is not on my MB, but in the VW Jetta TDI. Thanks upfront.

Mobil Delvac 1 5w40
No make up oil
6200 miles on oil and filter
Miles on unit 197,424
Stock spin-on filter

Glycol NEG
Water <0.05%
Fuel <1.0%
Viscosity @100c 17.4
Soot 1.8
Oxd % 8.9
Nox % 14.3
TBN 12.1

Iron 16
Chromium 0
Lead 0
Copper 0
Tin 0
Aluminum 4
Nickel 0
Silver 0
Manganese 1
Silicon 4
Boron 36
Sodium 0
Magnesium 44
Calcium 1988
Barium 0
Phosphorus 971
Zinc 1086
Mo 0
Ti 0
V 0
Cd 0

Oil is suitable for reuse
Change full flow filter, if not done when sampled
Top off system
Resample at next regular interval
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Lance Allison
Lance@LanceAllison.com

Sold: 1987 MB 300SDL, 320k miles, Astral Silver, Blue Leather, all books and records from day one.

Totalled: 1998 VW Jetta TDI, 488k miles, Classic Green/Gray Leather, loaded, E-Codes, "Slightly" modded, "Slightly" faster than stock, arrived 11/07/1997.

MBCA Member, Chicago Region
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  #2  
Old 06-28-2002, 10:57 AM
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Join Date: Jul 2001
Location: Western Michigan
Posts: 1,080
Lance:

Somehow your oil has thickened considerably.

The virgin Delvac 1 5W-40 should have a viscosity around 15.0 cSt at 100 deg C.
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  #3  
Old 06-28-2002, 12:51 PM
Senior Member
 
Join Date: Nov 2000
Location: SW Chicago Suburbs, IL
Posts: 263
Wonder why? I did replace the headgasket, turbo, injectors, and water pump over the past 10k miles. Right after the headgasket change, I ran some Delvac 1300 15w40 through for about 1000 miles as a flush to get rid of any coolant traces...do you suppose some of that thickened up the Delvac 1?

I changed the oil and filter after 1000 miles replacing the Delvac 1300 with Delvac 1, but I suppose there could have been enough residual left????
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Lance Allison
Lance@LanceAllison.com

Sold: 1987 MB 300SDL, 320k miles, Astral Silver, Blue Leather, all books and records from day one.

Totalled: 1998 VW Jetta TDI, 488k miles, Classic Green/Gray Leather, loaded, E-Codes, "Slightly" modded, "Slightly" faster than stock, arrived 11/07/1997.

MBCA Member, Chicago Region

Last edited by Lance Allison; 06-28-2002 at 12:59 PM.
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  #4  
Old 06-28-2002, 04:30 PM
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Join Date: Oct 2001
Location: Vienna, WV
Posts: 121
I can't say for sure but 1.8% soot will cause the oil to thicken some. The higher viscosity doesn't seem out of line or alarming to me.
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Tom Savage
Vienna, WV
1984 300D Euro
1995 S320
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