Rubicon XR differentials

[Sting23xr]

Hey guys,
I’m looking to replace the diff covers on my 23 rubi xr. I can’t for the life of me find the gaskets for these, or how much gear oil to use? Owners manual just states 75w/85 GL 5. I also can’t find that anywhere. Even the dealerships don’t have any. Closest thing I can find is royal purple 75w/90 GL 5. Would this be okay? They’re the DRF and DJV axles, m210hd wide and m220hd wide. Has anyone else run into this problem? For what it’s worth I live in the northeast and wheel hard pretty regularly, hence the aftermarket diff covers.

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[Bleda2002]

Gaskets are reusable so just reuse them, for gear oil if you are hard on it you may want to go 75w/140 rear 75w/90 front as Dana recommends 75w/140 for heavy use

 

[dcmdon]

Gaskets are reusable so just reuse them, for gear oil if you are hard on it you may want to go 75w/140 rear 75w/90 front as Dana recommends 75w/140 for heavy use

I would think that other than crawling, extended highway running is going to be the hardest thing those diffs encounter for most people. continued high rpm with moderate load.

 

[Sting23xr]

Thanks! But any insight on how much oil for the front and for the rear?

 

[CarbonSteel]

Thanks! But any insight on how much oil for the front and for the rear?

3QTs should do both (4QTs definitely will). The front is about 1.3QTs and the rear is about 1.6QTs.

As others have said, I would use 75W-140 as that is what Dana recommends. FCA reduced the viscosity chasing CAFE credits.

 

[Sting23xr]

3QTs should do both (4QTs definitely will). The front is about 1.3QTs and the rear is about 1.6QTs.

As others have said, I would use 75W-140 as that is what Dana recommends. FCA reduced the viscosity chasing CAFE creidts.

Use 75w/140 for the front, also?

 

[CarbonSteel]

Use 75w/140 for the front, also?

Correct; here are the specification sheets from Dana:

DS Front - https://d3qx1uccksbb2n.cloudfront.net/docs/SPECSHEET-JL-FRONT-UD44A-42019.pdf

DS Rear - https://d3qx1uccksbb2n.cloudfront.net/docs/SPECSHEET-JL-REAR-UD44A-D44A-42019.pdf

 

[Sting23xr]

Thanks!

 

[Tech Tim]

Hey guys,
I’m looking to replace the diff covers on my 23 rubi xr. I can’t for the life of me find the gaskets for these, or how much gear oil to use? Owners manual just states 75w/85 GL 5. I also can’t find that anywhere. Even the dealerships don’t have any. Closest thing I can find is royal purple 75w/90 GL 5. Would this be okay? They’re the DRF and DJV axles, m210hd wide and m220hd wide. Has anyone else run into this problem? For what it’s worth I live in the northeast and wheel hard pretty regularly, hence the aftermarket diff covers.

Gaskets are reusable so just reuse them, for gear oil if you are hard on it you may want to go 75w/140 rear 75w/90 front as Dana recommends 75w/140 for heavy use

^^^ @Bleda2002 has it right, just reuse the gaskets. They are pretty tough and if treated good can be reused many times before you need to replace them.

Front M210 axle takes 2.18 pints.
Rear M220 w/ ELocker takes 3.06 pints.

We carry both 75W85 and 75W90 from Red Line Oil.

75W85 Red Line Full Synthetic:
https://www.northridge4x4.com/part/gear-oil/50104-red-line-75w85-gl-5-gear-oil-1qt

75W90 Red Line Full Synthetic:
https://www.northridge4x4.com/part/gear-oil/50304-red-line-mt-90-75w90-gear-oil-1qt

 

[Terrymo]

I just installed Motobilt diff covers front and rear on my 23 JLURXR and used this https://www.amazon.com/dp/B08KB5LTJM?psc=1&ref=ppx_yo2ov_dt_b_product_details#customerReviews
I reused the factory gaskets with no issues

 

[jhackathorne]

I'll second what @CarbonSteel said and recommend 75w140 and 4 qts. 3 might work if you are using stock covers. I bought 4 of Valvoline 75w140 Flexfill and it made filling the diff much easier. I did swap to MetalCloak front diff cover/skid so it took more than the stock cover. I had about 1/2 qt. left. The below is a link from Motobilt which lists fluid levels.

https://motobilt.com/blogs/first-blog/jeep-wrangler-differential-fluid-capacity-chart

 

[CarbonSteel]

I'll second what @CarbonSteel said and recommend 75w140 and 4 qts. 3 might work if you are using stock covers. I bought 4 of Valvoline 75w140 Flexfill and it made filling the diff much easier. I did swap to MetalCloak front diff cover/skid so it took more than the stock cover. I had about 1/2 qt. left. The below is a link from Motobilt which lists fluid levels.

https://motobilt.com/blogs/first-blog/jeep-wrangler-differential-fluid-capacity-chart

Motobilt (+NextVenture) FTW!

 

[Sting23xr]

I'll second what @CarbonSteel said and recommend 75w140 and 4 qts. 3 might work if you are using stock covers. I bought 4 of Valvoline 75w140 Flexfill and it made filling the diff much easier. I did swap to MetalCloak front diff cover/skid so it took more than the stock cover. I had about 1/2 qt. left. The below is a link from Motobilt which lists fluid levels.

https://motobilt.com/blogs/first-blog/jeep-wrangler-differential-fluid-capacity-chart

I just finished painting my metal cloak covers. Ended up buying royal purple 75w/140 tonight but only bought 3 quarts. I didn’t factor in that the covers might require more oil. I kinda regret going with metal cloak, though. They’re cheaper (probably the only time that’ll happen) than arb or some others but the others at least have the fill hole where the level of gear oil is supposed to be, magnets to catch any shavings, etc. Would have made this a lot easier. But I’m a pretty big fan of MC. Have the undercloak already and the diff skids that’ll go on after I finish installing the new covers. I had read about the XR’s bump stops but didn’t truly grasp how big they were and how much they impede articulation until I took it out for the first time. I read one guy just did 2.5 springs and shocks and was happy. After talking to MC, though they highly recommend at least the 2.5 true dual kit. I didn’t want to spend so much so quickly. I’ll probably just have to deal with less articulation for a couple of months and then I’ll go for the 3.5 true dual lift kit with rock sports. Kinda feel like 2.5 is a bit of waste of money.

 

[HDSlowride]

I visited my local dealer parts department to buy differential fluid for my 2021 Rubicon with 3.6 eTorque. The parts manager, who I must say is super particular about things, asked for my VIN # before getting my gear oil.
Thinking I was correct in what I wanted, I asked for the Mopar 75W-90 for the front and 75W-140 for the rear (since I have the tow package). Again, she asked for my VIN before getting the items.
She put in my VIN in her computer, printed out a copy of my factory build sheet which showed the DJF M210 front axle, the DRF M220 rear axle and DSE Tru-Lok in both.
She then printed out a copy of the factory specifications for my VIN which showed the 210 and 220 factory recommended Mopar gear lube (SAE 75W85) (GL-5) part #68378949AA.
2.18 pints for the front.
3.06 pints for the rear.
So...can't argue with that. She explained that in her view, she always researched thoroughly, using the VIN, so that she could say this is what the factory recommends. If you want to use something different, that's on you.
In light of the TruLok sensor issue being a remote but real possibility, I elected to use her suggested parts just in case an issue ever came up with the lockers. No need to quote the Moss-Magnuson law to me, I'm familiar. Even the $60 a quart MSRP didn't deter me from the purchase. But gosh....60 bucks a quart for gear lube?? (she did give me 15% off though, veteran discount) although she may give everyone that discount, don't know, don't care.

 

[SSilver07]

I visited my local dealer parts department to buy differential fluid for my 2021 Rubicon with 3.6 eTorque. The parts manager, who I must say is super particular about things, asked for my VIN # before getting my gear oil.
Thinking I was correct in what I wanted, I asked for the Mopar 75W-90 for the front and 75W-140 for the rear (since I have the tow package). Again, she asked for my VIN before getting the items.
She put in my VIN in her computer, printed out a copy of my factory build sheet which showed the DJF M210 front axle, the DRF M220 rear axle and DSE Tru-Lok in both.
She then printed out a copy of the factory specifications for my VIN which showed the 210 and 220 factory recommended Mopar gear lube (SAE 75W85) (GL-5) part #68378949AA.
2.18 pints for the front.
3.06 pints for the rear.
So...can't argue with that. She explained that in her view, she always researched thoroughly, using the VIN, so that she could say this is what the factory recommends. If you want to use something different, that's on you.
In light of the TruLok sensor issue being a remote but real possibility, I elected to use her suggested parts just in case an issue ever came up with the lockers. No need to quote the Moss-Magnuson law to me, I'm familiar. Even the $60 a quart MSRP didn't deter me from the purchase. But gosh....60 bucks a quart for gear lube?? (she did give me 15% off though, veteran discount) although she may give everyone that discount, don't know, don't care.

Holy rip off Batman!!! $60 a quart? You do realize mopar/Jeep does not manufacture gear oil. It is simply bottled by another company with their logo on it and that there are fluids out there that meet their spec that cost 1/10th what you paid. I’m one picky SOB when it comes to my vehicles and maintenance and I love the best as much as anyone else out there, but I do refuse to pay blood money prices from dealers especially when it’s just a rebranded or repackaged product. Not bashing you I’m really not, I just hate seeing people be taken advantage of when it can be avoided.

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