|
2000 Corvette C5 Used Oil Analysis
Report
AMSOIL SAE 10w30
Many Corvette owners regularly track their car and are concerned about how
well their oil and engine hold up to the demands of the track. One of
C66 Racing's customers recently submitted his used oil for analysis by
Blackstone Laboratories after 5,000 miles and five months of use that
included a full day High Performance Driver's Education (HPDE) event at
Watkins Glen. The results, posted below, show that the oil,
AMSOIL SAE Synthetic 10w30,
performed very well and that the engine exhibited normal wear despite the
5,000 mile oil change interval and the sustained high rpm use during the
track day.
 The
car was a 2000 Corvette C5 (shown to the right) with a 5.7L LS1 motor, modified with a
set of custom ported heads and a custom designed cam shaft from East Coast
Supercharging. The track day at Watkins Glen was run in ambient
temperatures of 90F and included four 20 minute track sessions.
Note: AMSOIL INC. does not recommend extended drain intervals for
high performance or racing engines. AMSOIL INC. defines High
Performance and Racing Engines as "Street rods, muscle cars, race cars, 4x4
off-roads, and modified street/track vehicles." For these
applications, AMSOIL INC. recommends extending oil change intervals based on
oil analysis or using the longest drain recommendation of the original
equipment manufacturer. Use vehicle owner's discretion where engines
are modified.
AMSOIL Product
Change Interval Charts
| Oil |
AMSOIL SAE 10w30 |
|
|
|
Universal Lab
Averages |
| Miles on Oil |
5,000 |
|
|
|
|
| Miles on unit |
46,900 |
|
|
|
|
| Sample Date |
11/24/06 |
|
|
|
|
| |
ppm |
|
|
|
ppm |
| Aluminum |
7 |
|
|
|
5 |
| Chromium |
2 |
|
|
|
1 |
| Iron |
13 |
|
|
|
31 |
| Copper |
13 |
|
|
|
10 |
| Lead |
3 |
|
|
|
11 |
| Tin |
1 |
|
|
|
2 |
| Molybdenum |
53 |
|
|
|
47 |
| Nickel |
1 |
|
|
|
0 |
| Manganese |
1 |
|
|
|
1 |
| Silver |
0 |
|
|
|
0 |
| Titanium |
0 |
|
|
|
0 |
| Potassium |
0 |
|
|
|
9 |
| Boron |
184 |
|
|
|
43 |
| Silicon |
7 |
|
|
|
22 |
| Sodium |
10 |
|
|
|
15 |
| Calcium |
3365 |
|
|
|
1934 |
| Magnesium |
14 |
|
|
|
288 |
| Phosphorus |
653 |
|
|
|
781 |
| Zinc |
803 |
|
|
|
948 |
| Barium |
0 |
|
|
|
0 |
| |
|
|
|
|
|
| TBN |
Not Tested |
|
|
|
Min 1.0 |
| SUS Viscosity @ 210F |
62.8 |
|
|
|
Range ~58-66 |
| |
Actual Blackstone Report |
|
|
|
|
Our evaluation of the used oil
analysis report:
- As evidenced by the SUS
viscosity at 210F, the oil remained in grade for a 30 weight oil and did not
shear low out of grade or thicken
out of grade.
- As evidenced by the low ppm
values for the wear metals, primarily aluminum, iron, copper and lead, the
oil performed very well with no excessive wear occurring due to the 5,000 mile oil
change interval or the track day.
- The copper reading is
comparatively high when compared to the other wear metals, particularly lead
and iron which are both well below the lab's universal averages.
However, this is most likely due to the new copper head gasket used for the
custom heads and cam shaft that were installed by East Coast Supercharging on
this motor.
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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