German Castrol, 0W-30, 2974 miles, 1999 Corvette

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Stoneville, NC
1999 Corvette, LS-1 5.7L 346 CI V-8 (2nd Sample)

MI/HR on Oil - 2,974 miles
MI/HR on Unit - 85,573
Sample Date - 10/26/08
Make Up Oil Added - 0 qts.

2nd Sample / 1st Sample / Unit (Engine) Averages / Universal Avg.

ALUMINUM - 2 / 4 / 3 / 4
CHROMIUM - 1 / 1 / 1 / 1
IRON - 10 / 15 / 13 / 15
COPPER - 4 / 5 / 5 / 35
LEAD - 4 / 13 / 9 / 7
TIN - 2 / 0 / 1 / 2
MOLYBDENUM - 4 / 12 / 8 / 64
NICKEL - 0 / 1 / 1 / 1
MANGANESE - 0 / 1 / 1 / 3
SILVER - 0 / 0 / 0 / 0
TITANIUM - 0 / 0 / 0 / 0
POTASSIUM- 2 / 2 / 2 / 1
BORON - 5 / 15 / 10 / 68
SILICON - 6 / 8 / 7 / 10
SODIUM - 5 / 7 / 6 / 7
CALCIUM - 1739 / 1800 / 1770 / 2354
MAGNESIUM - 513 / 430 / 472 / 269
PHOSPHORUS - 820 / 797 / 809 / 743
ZINC - 1035 / 1014 / 1025 / 892
BARIUM - 0 / 0 / 0 / 0

2nd Sample / 1st Sample / Nominal

cSt Viscosity @ 100°C - 64,6 / 64.1 / 59~68
SUS Viscosity @ 210°F - 11.51 / 11.35 / 9.9~12.7
Flashpoint in °F - 410 / 390 / > 385
Fuel % - < 0.5 / < 0.5 / < 2.0
Antifreeze % - 0.0 / 0.0
Water % - 0.0 / 0.0 / < 0.1
Insolubles% - 0.2 / 0.4 / < 0.6

NICK: Great recovery in lead accumulation! We thought that the high lead discovered last time was due to
something temporary, and the shorter time on the oil went far to bring lead down nicely. This shows that
bearings wore more agreeably on this oil's watch, and that's good. Other metals were low and well
balanced, so no new problems at parts were evident. In fact, nothing unusual was noted among wear metals
this time. Physically, the oil looked great. Insolubles were low, showing limited oil oxidation and no
combustion issues.

Check back to build wear trends.
 
I used German Castrol (0w-30) for the previous sample as well. Currently, I have Pennzoil Platinum 5w-30 in the motor with about 30% left on the oil monitor.

I don't run the LS-1 to hard, just normal spirited driving, with a couple of on-ramp jack rabbit starts every now and then.

CG
 
Curious to see the GC vs PP. I love both oils. I've been running GC in my mom's Trans Am LS1 with 177k miles. But if there is something that does better, I'll use it.
 
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