Code:
OIL ACDelco Dexron LS 75w90
MILES IN USE 2,958
MILES 2,958
SAMPLE TAKEN 07/03/17
ALUMINUM 40
CHROMIUM 1
IRON 107
COPPER 3
LEAD 1
TIN 0
MOLYBDENUM 1
NICKEL 2
MANGANESE 7
SILVER 0
TITANIUM 0
POTASSIUM 5
BORON 56
SILICON 7
SODIUM 9
CALCIUM 11
MAGNESIUM 4
PHOSPHORUS 2299
ZINC 20
BARIUM 3
INSOLUBLES 0.2
WATER 0.0
FLASHPOINT ºF 390
SUS VIS 210ºF 73.7
cSt @ 212ºF 13.93
Chevy requires that the rear axle fluid is changed after the first competitive driving even/track day/etc, so that's what I did. They also specify that you should change it every 24 hours of this type of use which would work out to about once a year for me.
Blackstone highlighted that the aluminum was high but probably because it was part of break-in. Nothing else looks out of whack here and I'm sure it would've been fine to run for the whole year, but I would rather play it safe than deal with a denied warranty claim at some point.
OIL ACDelco Dexron LS 75w90
MILES IN USE 2,958
MILES 2,958
SAMPLE TAKEN 07/03/17
ALUMINUM 40
CHROMIUM 1
IRON 107
COPPER 3
LEAD 1
TIN 0
MOLYBDENUM 1
NICKEL 2
MANGANESE 7
SILVER 0
TITANIUM 0
POTASSIUM 5
BORON 56
SILICON 7
SODIUM 9
CALCIUM 11
MAGNESIUM 4
PHOSPHORUS 2299
ZINC 20
BARIUM 3
INSOLUBLES 0.2
WATER 0.0
FLASHPOINT ºF 390
SUS VIS 210ºF 73.7
cSt @ 212ºF 13.93
Chevy requires that the rear axle fluid is changed after the first competitive driving even/track day/etc, so that's what I did. They also specify that you should change it every 24 hours of this type of use which would work out to about once a year for me.
Blackstone highlighted that the aluminum was high but probably because it was part of break-in. Nothing else looks out of whack here and I'm sure it would've been fine to run for the whole year, but I would rather play it safe than deal with a denied warranty claim at some point.