Factory Fill, 64K, 12 Jeep Wrangler Unlimited Rubicon TCase

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Aug 29, 2011
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Drained and filled with Amsoil ATF.

Make/Model: Jeep Rock-Trac (Rubicon)
Vehicle: 2012 Jeep Wrangler Unlimited

Code


OIL Factory

MILES IN USE 64,056

MILES ON UNIT 64,056

SAMPLE TAKEN 8/19/18

MAKE UP OIL 0



ALUMINUM 16

CHROMIUM 0

IRON 190

COPPER 74

LEAD 0

TIN 2

MOLYBDENUM 0

NICKEL 1

MANGANESE 58

SILVER 0

TITANIUM 0

POTASSIUM 13

BORON 77

SILICON 159

SODIUM 31

CALCIUM 269

MAGNESIUM 4

PHOSPHORUS 302

ZINC 15

BARIUM 5



SUS @ 210 43.9

cSt @ 100 5.38

FLASHPOINT 400

WATER % 0.0

INSOLUBLES % 0.0

TAN 1.2




Blackstone Comments:
Universal averages for a Jeep transfer case give you an idea of typical wear after ~44K miles on the oil. Next to those, there is some extra metal in this sample, but don't be too put off by that. This is the factory fill, so a fair amount of the metal is just lingering material from the initial wear-in period plus normal accumulation over the past 64K miles. We should see a lot of progress with each oil change. No contaminants or oxidized solids were present. TAN is fine at 1.2. Resample in 65K miles.
 
Looks pretty good. My F150's Borg-Warner T-case showed 603 ppm of iron with 91k miles on the factory fill. At least I hope it was the FF with that much iron (I bought it with 81k miles). It wasn't full when I drained it, either (concentrating the wear metal ppm count).
 
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