First OCI since installing the transfer case pump upgrade kit from Merchant.
Make/Model: GM Transfer Case
Vehicle: 2004 Chevy 2500HD
Code:
OIL Ams ATF Ams ATF Maxlife
MILES IN USE 60,000 48,337 49.981
MILES 208,629 148,629 99,996
SAMPLE TAKEN 7/12/17 8/14/13 7/19/11
ALUMINUM 21 12 23
CHROMIUM 1 0 0
IRON 138 57 89
COPPER 39 38 50
LEAD 67 39 84
TIN 1 0 0
MOLYBDENUM 0 0 1
NICKEL 7 3 9
MANGANESE 14 28 37
SILVER 0 1 0
TITANIUM 0 0 0
POTASSIUM 2 3 2
BORON 230 261 109
SILICON 76 8 14
SODIUM 6 8 10
CALCIUM 231 260 271
MAGNESIUM 303 131 246
PHOSPHORUS 542 614 328
ZINC 8 6 21
BARIUM 0 0 1
SUS @ 210 52.4 49.8 44.9
cSt @ 100 7.99 7.21 5.68
FLASHPOINT 460 455 385
WATER % 0.0 0.0 0.0
INSOLUBLES % TR 0.1 0.2
TAN 2.8 1.9
Blackstone Comments:
We think this is about the longest you'll want to run between changes with this transfer case. Iron isn't high compared to averages, but the wear rate is showing a substantial increase in this report relative to the previous sample. The viscosity also tested a little thick, which can happen during extended oil runs. Insolubles are better though at just a trace, so oxidized solids aren't excessive this time. The TAN shows more acidity at 2.8, but that is not overly acidic in our opinion. Stay around 60K miles for the next interval for a good comparison to this report.
Make/Model: GM Transfer Case
Vehicle: 2004 Chevy 2500HD
Code:
OIL Ams ATF Ams ATF Maxlife
MILES IN USE 60,000 48,337 49.981
MILES 208,629 148,629 99,996
SAMPLE TAKEN 7/12/17 8/14/13 7/19/11
ALUMINUM 21 12 23
CHROMIUM 1 0 0
IRON 138 57 89
COPPER 39 38 50
LEAD 67 39 84
TIN 1 0 0
MOLYBDENUM 0 0 1
NICKEL 7 3 9
MANGANESE 14 28 37
SILVER 0 1 0
TITANIUM 0 0 0
POTASSIUM 2 3 2
BORON 230 261 109
SILICON 76 8 14
SODIUM 6 8 10
CALCIUM 231 260 271
MAGNESIUM 303 131 246
PHOSPHORUS 542 614 328
ZINC 8 6 21
BARIUM 0 0 1
SUS @ 210 52.4 49.8 44.9
cSt @ 100 7.99 7.21 5.68
FLASHPOINT 460 455 385
WATER % 0.0 0.0 0.0
INSOLUBLES % TR 0.1 0.2
TAN 2.8 1.9
Blackstone Comments:
We think this is about the longest you'll want to run between changes with this transfer case. Iron isn't high compared to averages, but the wear rate is showing a substantial increase in this report relative to the previous sample. The viscosity also tested a little thick, which can happen during extended oil runs. Insolubles are better though at just a trace, so oxidized solids aren't excessive this time. The TAN shows more acidity at 2.8, but that is not overly acidic in our opinion. Stay around 60K miles for the next interval for a good comparison to this report.