Same thing here on the front diff, looks like I could have gone past the Blackstone OCI recommendation of 40K. Will probably push front & rear up to 50K.
Make/Model: GM Front Differential
Vehicle: 2004 Chevy 2500HD
Code:
OIL SVG 75w90 VAL Syn 75W90
MILES IN USE 39,780 29,976
MILES ON UNIT 146,130 106,350
SAMPLE TAKEN 7/3/13 10/20/11
MAKE UP OIL 0 0
IRON 99 170
CHROMIUM 0 1
NICKEL 0 2
ALUMINUM 0 2
COPPER 0 1
LEAD 0 1
TIN 0 0
CADMIUM 0
SILVER 0 0
VANADIUM 0
SILICON 15 4
SODIUM 3 4
POTASSIUM 0 0
TITANIUM 0 0
MOLYBDENUM 0 0
ANTIMONY 0
MANGANESE 2 4
LITHIUM 0
BORON 125 305
MAGNESIUM 0 2
CALCIUM 5 10
BARIUM 0 0
PHOSPHORUS 893 2169
ZINC 10 17
Water %
SUS @ 210F 76.2
Visc @ 100C 16.9 14.56
TAN 2.03
Oxidation 45
Nitration 4
Insolubles % 0.3
Flashpoint 375
Oil Analysis Vendor Comments:
Data indicates no abnormal findings. Resample at normal interval. Lubricant change acknowledged.
Make/Model: GM Front Differential
Vehicle: 2004 Chevy 2500HD
Code:
OIL SVG 75w90 VAL Syn 75W90
MILES IN USE 39,780 29,976
MILES ON UNIT 146,130 106,350
SAMPLE TAKEN 7/3/13 10/20/11
MAKE UP OIL 0 0
IRON 99 170
CHROMIUM 0 1
NICKEL 0 2
ALUMINUM 0 2
COPPER 0 1
LEAD 0 1
TIN 0 0
CADMIUM 0
SILVER 0 0
VANADIUM 0
SILICON 15 4
SODIUM 3 4
POTASSIUM 0 0
TITANIUM 0 0
MOLYBDENUM 0 0
ANTIMONY 0
MANGANESE 2 4
LITHIUM 0
BORON 125 305
MAGNESIUM 0 2
CALCIUM 5 10
BARIUM 0 0
PHOSPHORUS 893 2169
ZINC 10 17
Water %
SUS @ 210F 76.2
Visc @ 100C 16.9 14.56
TAN 2.03
Oxidation 45
Nitration 4
Insolubles % 0.3
Flashpoint 375
Oil Analysis Vendor Comments:
Data indicates no abnormal findings. Resample at normal interval. Lubricant change acknowledged.