|
2006
Cadillac CTS-V Used Oil Analysis
Report
Transmission Fluid
C66 Racing team
owner Brad Neff bought a 2006 Cadillac CTS-V as his daily driver in the
fall of 2006. The car was a used corporate car that had 7780 miles of use. In an attempt to
obtain information on the transmission's performance over time, as well as
how the factory fluids compared to aftermarket alternatives such as AMSOIL,
the team intends to draw used oil samples after each fluid change and submit them to
Blackstone Laboratories for analysis.
Used Oil Analysis History:
| Oil |
AMSOIL ATF |
Factory Fill |
|
|
|
Universal Lab
Averages |
| Miles on oil |
6,306 |
10,636 |
|
|
|
|
| Miles on unit |
16,942 |
10,636 |
|
|
|
|
| Sample Date |
1/11/09 |
6/10/07 |
|
|
|
|
| |
ppm |
ppm |
|
|
|
ppm |
| Aluminum |
2 |
16 |
|
|
|
10 |
| Chromium |
0 |
1 |
|
|
|
1 |
| Iron |
47 |
120 |
|
|
|
97 |
| Copper |
5 |
7 |
|
|
|
28 |
| Lead |
3 |
4 |
|
|
|
25 |
| Tin |
0 |
0 |
|
|
|
1 |
| Molybdenum |
0 |
3 |
|
|
|
2 |
| Nickel |
1 |
1 |
|
|
|
1 |
| Manganese |
3 |
19 |
|
|
|
8 |
| Silver |
0 |
0 |
|
|
|
0 |
| Titanium |
1 |
0 |
|
|
|
0 |
| Potassium |
2 |
4 |
|
|
|
0 |
| Boron |
51 |
52 |
|
|
|
56 |
| Silicon |
35 |
157 |
|
|
|
28 |
| Sodium |
13 |
11 |
|
|
|
10 |
| Calcium |
258 |
22 |
|
|
|
1184 |
| Magnesium |
1 |
3 |
|
|
|
94 |
| Phosphorus |
410 |
203 |
|
|
|
714 |
| Zinc |
6 |
21 |
|
|
|
548 |
| Barium |
0 |
7 |
|
|
|
1 |
| |
|
|
|
|
|
|
| SUS Viscosity @ 210F |
48.6 |
42.6 |
|
|
|
Range ~43-51 |
| cSt Viscosity @ 100C |
6.85 |
5.03 |
|
|
|
Range ~5.1-7.9 |
| Insolubles |
0.1 |
0.9 |
|
|
|
|
| |
Actual Blackstone Report |
Actual Blackstone Report |
|
|
|
|
Initial Fill
The differential fluid initial fill was GM Factory Fill Dexron III fluid.
Oil Change 6-10-07
After 10,636 miles of driving, the transmission fluid was drained and
replaced with
AMSOIL Universal Automatic Transmission Fluid (ATF). This version
of the AMSOIL ATF was formulated to be suitable for both Dexron III and
Dexron VI applications and had an initial viscosity of 6.8 cSt at 100C as
indicated by this July 2007 AMSOIL
Product Data Sheet.
Oil Change 1-11-09
After 6,306 miles of driving, the transmission fluid was drained and
replaced with
AMSOIL Torque-Drive™ Synthetic Automatic Transmission
Fluid (ATD). The basis for this change was due
to AMSOIL's re-evaluation of their fluid recommendations for the Tremec
manual transmissions in GM applications. AMSOIL had recommended the
AMSOIL Universal ATF as the primary choice with the AMSOIL Torque Drive (ATD)
as the alternate choice, but in late 2008, they changed their recommendation
to the AMSOIL Torque Drive (ATD) as the primary choice and the AMSOIL
Universal ATF as the alternate. So that we could evaluate the AMSOIL
Torque Drive (ATD) in our own vehicle and thus speak from experience when
recommending this fluid to our customers, we chose to change out the AMSOIL
Universal ATF for the AMSOIL Torque Drive (ATD).
Our Evaluation of the Results:
- As evidenced by the viscosity of 6.85 cSt at 100C, the AMSOIL ATF did not
shear down at all from its initial value of 6.8 cSt over the 6,306 miles of
use. Conversely, the factory fill Dexron III sheared down from a
nominal value for a Dexron III fluid of about 7.3 cSt at 100C to 5.03 cSt in
only 10,636 miles of use.
Note: In May 2009, AMSOIL increased the viscosity of the AMSOIL ATF from 6.8
cSt to 7.6 cSt at 100C, removing its recommendation for Dexron VI
applications and placing it primarily as a fluid suitable for Dexron III
applications. They also just released a new light duty ATF suitable
for Dexron VI applications:
AMSOIL Synthetic Low Viscosity Universal Automatic
Transmission Fluid (ATL)
Understanding the used oil analysis report
These two links to pages on
Blackstone Laboratories website provide background on the elements in the
used oil analysis report, as well as how to review and understand the
report:
Understanding the Elements
Understanding Your Gas/Diesel Engine Oil Report
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