What Axle Fluid for Gladiator Rubicon Diesel w/ Tow Package?

[TheGreenBackGorilla]

Mopar Tech Authority data states you can use 75W-140 if you have the Trailer Tow Package.

But that is not taking affect Diesel Engines w/ Tow

This is simpler than it's being made out here. If you don't tow, use 75W85 for possibly slightly better fuel economy. If you tow a lot (putting more stress and heat into the differential) use 75W140, which will hold up to high temperature better. If you use 75W140 without towing, no big deal. Your choice.

If you have LSD, add the friction modifier or use a fluid that already has it (many do). If you don't have LSD and use friction modifier, no big deal

I live in NC, tow a 3 seater Jet ski, and off road a fair amount.

 

[Elff]

Rubicons do not have LSDs regardless of engine.. the exception was the TJ/LJ Rubis that had both.

I used to own a 2003 TJR and now own a 2004 TJR and can concur
I use royal purple 75w140 in them, and will switch to that in the gladiator when I need to change fluids. I tow, so I will do this at 10,000 miles, instead of the recommended 20,000.
I've gotten 200,000 total miles out of those TJ diffs with zero issues.

 

[Hootbro]

But that is not taking affect Diesel Engines w/ Tow

Dana ships on their aftermarket sold Advantek axles and recommends for rebuild on all their Advantek 44 axles the use of 75W-140. Use whatever you want but just because the owners manual does not list that gear oil grade, does not mean there is no engineering behind using it.

Nothing is special about the Advantek axles on the diesel models other than the gear ratio.

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