Schaeffer's 15w-40 VW TDI

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Listed below are my last four analysis results from Dyson Analysis and Holt Cat labs. The fifth analysis results are from Schaeffer's Lab.

2003 VW Golf TDI

Oil Schaeffer's #700 15w-40 blend
Miles on Engine 10246 20305 30211 44750 49900
Miles on oil 4770 10059 9906 12300 5150
code:

Fuel soot zero 47 33 42 zero

%Oxid 17% 22% 11% 24% 7%

%Nox 7.50% 35% 20.5% 42% 6%

TBN 6 9 9.5 10.0 na

FE ppm 18 21 20 14 13

FE /1k 3.8 2.1 2.0 1.62 1.15

Chromium 1 1 1 0 1

Lead 1 3 0 10 1

Copper 3 3 3 2 2

Tin 1 1 1 0 na

Aluminum 4 4 5 3 4

Silicon 4 3 4 2 4

Sodium 3 2 2 4 na

Potassium 0 2 0 0 na

Moly 83 99 112 101 137

Phosphorus 1132 1300 1425 1172 1610

Zinc 1286 1416 1635 1438 1663

Calcium 3272 3882 4047 3770 4462

Magnesium 15 18 12 15 10

water neg neg neg neg neg

fuel neg neg neg neg neg

Antifreeze neg neg neg neg neg

Starting Vis 14 to 16

Vis@100 13.8 15.0 14.9 15.2 15.39


makeup 0 / Oz / Oz / 0oz / 0oz
additives none -none - LC - LC - LC
fuel treat SS / SS / SS&FP / FP / FP
Filters air/oil oem / oem / oem / Mann / Mann


Note: SS = SoyShield FP = Fuel Power LC = Lube Control. 14 ozs were added to the crankcase at 1oz per thousand.

Modifications: EGR adjustment, CCV oil separator, Cat fuel filter added 10000 miles into the period.

Holt Cat: Has no comment.

I took this sample to check the lead level and the previous sample seems to be contaminated as Terry speculated.

The FP and LC seem to be doing what they promise.

Comments or observations?


Corrected Calcium reading in last UOA,Tony
lined-up the horses a little,mark


[ October 12, 2004, 12:43 AM: Message edited by: rugerman1 ]
 
cheers.gif
..... What's up with the calcium?
 
Misread the report. The lab needs a new ribbon in their pin printer.

Cal = 4462

To late to edit the post.

That error got me wondering.

When additives like Calcium are used up do they disappear?

Corrected Calcium reading in your VOA

[ October 11, 2004, 10:54 PM: Message edited by: 59 Vetteman ]
 
I am curious what Scale your lab uses for Soot readings? I am not used to seeing them expressed in double digit numbers. Help put a feeble mind at ease.

patriot.gif
 
rugerman1

Thanks for the editorial help!

59 Vetteman

The lab list the soot reading as a percent?
Don't know if its significant but its listed as .0 ( point zero)% soot. That might indicate accuracy down to the tenths of a percent?

My only other 5000 mile run also had a zero soot reading. This reading was from the Holt Cat lab and it was listed as zero soot ct/ml.

Wonder if at the 5k mark insufficient quantities of soot has clumped together to get a reading?

[ October 12, 2004, 10:11 PM: Message edited by: Neil Womack ]
 
The CAT labs soot correlation is as follows;

0-199 scale for the nicolet omnic FTIR.

47 = 23.5% or 0.92% by weight

33 = 16.5% or 0.68% by weight

42 - 21 % or 0.84% by weight

soot by this method is generally acceptable for HDD engines up to 100 to 160 on the 199 scale. Depends on oil and engine and total signature we see. For the TDI I like to see it below 1 % which Schaeffers,LC and FP are allowing by retarding soot development and what is made is being converted to a solid lubricant and burned.

The Schaeffers lab IR tests are like CTC/OAI biased way too low. Not sure what method they are using to determine soot.

Wearcheck and Polaris if calibrated correctly give reasonable IR conversions.


quote:

I took this sample to check the lead level and the previous sample seems to be contaminated as Terry speculated.

I don't speculate about much when it comes to this stuff, its just that it is more art than science some times. That drives the antiseptic cubicle wannabe engineers nuts !

Thank goodness I have good assistance from the likes of MolaKule and Rick20 who are chemists,engineers,and physicsts who can turn a darn good wrench !

TD

[ October 13, 2004, 04:45 PM: Message edited by: Terry ]
 
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