Rear Axle Question

[Bludodge]

Using pics I found online to identify between the M200 and M220 rear end, mine matches up to the M200, which the owner's manual states uses 75W-150. Looking at my window sticker I see there is the Trac-Lok option that was bought. When you read the Owner's Manual it only mentioned Trac-Lok with the M220 though. Im tryting to buy the correct oil for what I have. Can anyone help? Can you get a M200 with Trac-Lok? Do I get 75W-85 or 75W-140?

Thank you in advance. (my first Jeep)
Steve

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[PuddleJumper]

Looks like a M220 to me. But just to be sure. Do you have the full sale sheet or build sheet for your truck? Or a vin so we can check ourselves?

 

[Bludodge]

I don't see the flat protrusion on the rear cover under the plug which is why I assumed it's a M200. All I have is the window sticker and VIN: 1C6HJTFG0LL107503. Thank you!!

 

[bblan]

All JT's came with an M220. Dana recommends 75-140 for the front and rear as of the last update. Link to the data sheet below.

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

 

[Bludodge]

All JT's came with an M220. Dana recommends 75-140 for the front and rear as of the last update. Link to the data sheet below.

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

So 75W-140 in the front as well even though the book states 75W-85 for the front? Only asking because the link you sent mentions "Rear". Still learning here. Thank you.

 

[Bludodge]

All JT's came with an M220. Dana recommends 75-140 for the front and rear as of the last update. Link to the data sheet below.

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

Someone said put full bottle of friction modifier in. That's 4 ounces. This chart calls for 2.4 ounces when converted from .15 Pints. Will a full bottle hurt it?

 

[PuddleJumper]

I don't see the flat protrusion on the rear cover under the plug which is why I assumed it's a M200. All I have is the window sticker and VIN: 1C6HJTFG0LL107503. Thank you!!

Mopar website VIN decoder confirms yours as a M220 w/ Trac-Lok. Pretty sure all Gladiators are M220 standar but ya never know. Remember to get Mopar specific friction modifier when doing your diff oil change. the factory Trak-Loc doesn't play well with just standard additives found in off the self LSD synthetic oild like Valvoline.

 

[PuddleJumper]

All JT's came with an M220. Dana recommends 75-140 for the front and rear as of the last update. Link to the data sheet below.

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

Thats for a JL sir. and Dana aftermarket, not OE Dana. There could be some key differences between the two.

 

[bblan]

So 75W-140 in the front as well even though the book states 75W-85 for the front? Only asking because the link you sent mentions "Rear". Still learning here. Thank you.

https://media.spicerparts.com/cfs/f...SHEET-JL-FRONT-UD44A-42019.pdf?store=original

Here's the sheet for the front. 75-140 in the front as well. That's what I run in mine but some folks run 75-90 since you're typically not in 4WD nearly as often. I guess the front comes down to preference.

 

[PuddleJumper]

Someone said put full bottle of friction modifier in. That's 4 ounces. This chart calls for 2.4 ounces when converted from .15 Pints. Will a full bottle hurt it?

That chart is for JLs not JTs. also aftermarket Dana not OE Dana. I wouldn't recommend following that. But it probably wouldn't hurt if you did. These axles are very robust.

 

[bblan]

Thats for a JL sir. and Dana aftermarket, not OE Dana. There could be some key differences between the two.

The right column is a factory Dana 44, left column is UD44. Notice the fluid is the same for both. Regardless of JL or JT the Dana 44 is the same other than the mounts for springs and control arms.

 

[Bludodge]

Mopar website VIN decoder confirms yours as a M220 w/ Trac-Lok. Pretty sure all Gladiators are M220 standar but ya never know. Remember to get Mopar specific friction modifier when doing your diff oil change. the factory Trak-Loc doesn't play well with just standard additives found in off the self LSD synthetic oild like Valvoline.

Ok thank you. I will get 75W-140 and friction modifier for the rear. I was planning on using Mopar anyway as get a discount at dealer. I'll put 75W-85 in the front like the Owner's Manual calls for. Should be correct right? can you send me a link to where you went to get that information?

 

[PuddleJumper]

The right column is a factory Dana 44, left column is UD44. Notice the fluid is the same for both. Regardless of JL or JT the Dana 44 is the same other than the mounts for springs and control arms.

Pretty sure both are ADVANTek and both have no FAD. Which explains thicker oil. The Dana part doesn't match the MOPAR either.

 

[Lunentucker]

Ok thank you. I will get 75W-140 and friction modifier for the rear. I was planning on using Mopar anyway as get a discount at dealer. I'll put 75W-85 in the front like the Owner's Manual calls for. Should be correct right? can you send me a link to where you went to get that information?

Here's your full build sheet. Save it.
View attachment BuildSheetServlet.pdf

 

[bblan]

[

Pretty sure both are ADVANTek and both have no FAD. Which explains thicker oil. The Dana part doesn't match the MOPAR either.

I have both a JL and a JT. I am not going to argue with you about what I know. My information came from an engineer. I was providing insight. You could always contact Dana and get the same information I just provided.

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