Schaeffer's 15w-40 2003 VW TDI 10k

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Jun 9, 2002
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Central Texas
Oil Schaeffer's Schaeffer's
Miles on Engine 10246 /20305
Miles on oil 4770 /10059

Fuel soot zero /47 max 150
%Oxid 17% /22%
%Nox 7.50% /35%
TBN 6 /9
FE ppm 18 /21
FE /1k 3.8 /2.1
Chromium 1 /1
Lead 1 /3
Copper 3 /3
Tin 1 /1
Aluminum 4 /4
Silicon 4 /3
Sonium 3 /2
Potasium 0 /2
Moly 83 /99
Phosphorus 1132 /1300
Zinc 1286 /1416
Calcium 3272 /3882
Magnesium 15 /18
water neg /neg
fuel neg /neg
Antifreeze neg /neg
Startging Vis 14 to 16
Vis@100 13.8 /15.0
makeup 0 /16oz
additives none -none
fuel treat SoyShield -SoyShield
Filters air/oil oem -oem

Comments or observations?

[ November 08, 2003, 10:51 AM: Message edited by: Neil Womack ]
 
Neil,

Excellent results for a low mileage TDI, and I've probably looked at 100 analyses from this engine ....

The soyshield additive improves the lubricity of the fuel and I suspect it reduces piston ring and cylinder wear. I'd highly recommend it in this engine, which is known to develop piston deposits over time.

TS
 
Very nice results!

But how did TBN go up and silicon go down from the first 5k to the second 5k? Or were they two seperate intervals? (I'm assuming the two UOA results shown were from the same batch of oil)
 
Both samples are from the same batch of oil. The old Schaeffer's formula with a base TBN of 10. As for the much better TBN retention could it be the effect of engine break-in or additive clash between the OEM oil and the first Schaeffer's sample.
 
quote:

Originally posted by Neil Womack:
Both samples are from the same batch of oil. The old Schaeffer's formula with a base TBN of 10. As for the much better TBN retention could it be the effect of engine break-in or additive clash between the OEM oil and the first Schaeffer's sample.

Neil

I thought you drained at the first analysis?

Or by batch, do you mean production run as opposed to the same batch of oil in the crankcase?

Tim
 
Tim

Both sample draws were followed by an oil/filter change. However, just before the first sample I was running the factory oil. My thinking was that the TBN on the first sample was effected by the factory oil or possibly new engine break-in.

Other than that I can't explain why the TBN was lower on the first sample ( which was a 5k drain interval) and the second ( which was a 10k drain interval).
 
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