|
2003 Chevy Trailblazer EXT
Used Engine Oil Analysis
Report
C66 Racing team
owner Anita Neff bought a 2003 Chevy Trailblazer EXT with the 5.3L V-8 as
her daily driver in the
spring of 2003. After the initial oil change, the oil in the truck as
been changed per the GM Oil Life Monitor, averaging about 6,000 miles per
oil change. AMSOIL Extended
Life 5w30 Synthetic Motor Oil has been used exclusively in the truck
since the factory oil was replaced. In an attempt to
obtain information on the engine's performance after 50,000 miles of overall
use, the engine oil was submitted to
Blackstone Laboratories for analysis.
Used Oil Analysis History:
| Oil |
AMSOIL XL 5w30 |
|
|
|
Universal Lab
Averages |
| Oil Filter |
AMSOIL SDF32
(Note 1) |
|
|
|
|
| Miles on Oil |
5,817 |
|
|
|
5,500 |
| Miles on unit |
54,934 |
|
|
|
|
| Sample Date |
9/16/07 |
|
|
|
|
| Oil Life Monitor |
5% |
|
|
|
|
| |
ppm |
|
|
|
ppm |
| Aluminum |
2 |
|
|
|
4 |
| Chromium |
1 |
|
|
|
2 |
| Iron |
10 |
|
|
|
23 |
| Copper |
15 |
|
|
|
61 |
| Lead |
8 |
|
|
|
9 |
| Tin |
2 |
|
|
|
1 |
| Molybdenum |
14 |
|
|
|
51 |
| Nickel |
1 |
|
|
|
1 |
| Manganese |
41 |
|
|
|
2 |
| Silver |
0 |
|
|
|
0 |
| Titanium |
0 |
|
|
|
0 |
| Potassium |
11 |
|
|
|
1 |
| Boron |
50 |
|
|
|
57 |
| Silicon |
10 |
|
|
|
13 |
| Sodium |
2 |
|
|
|
10 |
| Calcium |
2753 |
|
|
|
1716 |
| Magnesium |
578 |
|
|
|
363 |
| Phosphorus |
890 |
|
|
|
781 |
| Zinc |
1138 |
|
|
|
945 |
| Barium |
0 |
|
|
|
0 |
| |
|
|
|
|
|
| TBN |
5.9 |
|
|
|
Min 1.0 |
| SUS Viscosity @ 210F |
65.5 |
|
|
|
Range ~56-63 |
| |
Actual Blackstone Report |
|
|
|
|
Note 1: The AMSOIL
SDF Oil Filter has been discontinued and replaced by the
AMSOIL Ea Oil Filter.
Blackstone's comments on the sample result:
Universal averages show typical wear metals for an oil from this type engine
after about 5500 miles on the oil. You've run this oil 5817 miles and wear
was quite low, easily beating average levels. The viscosity of the oil was
high for a 5W/30, reading more in the 10W/30 range. That’s not hurting
anything. The oil was in good shape physically, containing no moisture,
fuel, or coolant. The air and oil filters are working well too. We think
your Trailblazer was doing well as of 9/16/07, the sample date. The TBN was
5.9, showing plenty of active additive left in the oil.
Our evaluation of the used oil
analysis report:
- As evidenced by the TBN of 5.9,
the oil had life remaining and this sample could easily have been taken
down to 0% remaining on the GM Oil Life Monitor.
- As evidenced by the ppm values
for the wear metals, primarily aluminum, iron, copper and lead, the engine
exhibited wear 11-75% below the universal lab averages. Given that the
oil was used longer than the typical 5,500 miles for this universal average
for this fleet of engine, we are particularly pleased with these low wear
numbers.
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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