Fluid was not replaced at the time of the sample. We just purchased this vehicle and had UOA's performed on the front & rear diff.
Make/Model: Dana 44 Differential (Rear)
Vehicle: 2012 Jeep Wrangler Rubicon Unlimited
Code:
OIL Unknown (Factory fill?)
MILES IN USE Unknown
MILES ON UNIT 61,945
SAMPLE TAKEN 6/19/18
MAKE UP OIL 0
ALUMINUM 0
CHROMIUM 20
IRON 353
COPPER 2
LEAD 0
TIN 0
MOLYBDENUM 2
NICKEL 8
MANGANESE 7
SILVER 0
TITANIUM 0
POTASSIUM 2
BORON 226
SILICON 14
SODIUM 5
CALCIUM 9
MAGNESIUM 2
PHOSPHORUS 2228
ZINC 21
BARIUM 1
SUS @ 210F 72.6
Visc @ 100C 13.63
Flashpoint 410
Water % 0.0
Insolubles % 0.1
TAN 3.7
Blackstone comments:
This sample from the rear diff looks pretty good too. We're not sure if it's the factory fill or not, but regardless, these results don't point to any issues. Iron and chrome are higher than we saw from the front axle, but that's not anything to be concerned about. The rear diff typically sees quite a bit more use so it's common to see more metal in its oil. No contamination was found and the viscosity is in spec. Insolubles (solids) are pretty minimal at 0.1%. The TAN of 3.7 is still low enough to show no excess acidity. Nice pair of reports! Just check back in 20K miles or so.
Make/Model: Dana 44 Differential (Rear)
Vehicle: 2012 Jeep Wrangler Rubicon Unlimited
Code:
OIL Unknown (Factory fill?)
MILES IN USE Unknown
MILES ON UNIT 61,945
SAMPLE TAKEN 6/19/18
MAKE UP OIL 0
ALUMINUM 0
CHROMIUM 20
IRON 353
COPPER 2
LEAD 0
TIN 0
MOLYBDENUM 2
NICKEL 8
MANGANESE 7
SILVER 0
TITANIUM 0
POTASSIUM 2
BORON 226
SILICON 14
SODIUM 5
CALCIUM 9
MAGNESIUM 2
PHOSPHORUS 2228
ZINC 21
BARIUM 1
SUS @ 210F 72.6
Visc @ 100C 13.63
Flashpoint 410
Water % 0.0
Insolubles % 0.1
TAN 3.7
Blackstone comments:
This sample from the rear diff looks pretty good too. We're not sure if it's the factory fill or not, but regardless, these results don't point to any issues. Iron and chrome are higher than we saw from the front axle, but that's not anything to be concerned about. The rear diff typically sees quite a bit more use so it's common to see more metal in its oil. No contamination was found and the viscosity is in spec. Insolubles (solids) are pretty minimal at 0.1%. The TAN of 3.7 is still low enough to show no excess acidity. Nice pair of reports! Just check back in 20K miles or so.
