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Old 02-15-2014, 01:32 PM   #1
Join Date: Feb 2014
Posts: 1
Tru-lok differential

I have 13,000 miles on my Rubicon and being told I need to change the differential oil??? The manual only talks about Trac-lok. I have a Tru-lok. Do I need to add additive or can I jut change the oil myself? Would really like some feedback if any.

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Old 02-15-2014, 01:50 PM   #2
Join Date: Oct 2012
Posts: 105
No additive needed.

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Old 02-15-2014, 02:13 PM   #3
LJ Dave's Avatar
Join Date: Jan 2014
Location: Pine, Colorado
Posts: 803
I happen to have my factory manual sitting right here. The Dana 44 Rubicon Tru-lok axles take 1.89 liters ( 4 pints) of 75W-140 synthetic gear lubricant - no additives required.
2005 Rubicon LJ, 4.5 lift, 35's
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Old 02-15-2014, 03:57 PM   #4
Join Date: Mar 2010
Location: Warner Robins, GA
Posts: 466
You do not need any additives for the Rubi axles. Factory recommends 74w-140.

You can change it yourself, Rubi diffs have drain plugs. Very easy.

The plugs have magnets on them, clean off the metal fuzz.

The 12K interval change is for towing and lots of off roading. Otherwise, you don't have to change it that often.

Also change it often if you submerge your axles in water.
'92 Islander
'06 Rubicon
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