Differential oil change

[Gmanjeeper]

@Gmanjeeper - personal opinion:
If there is a potential for something to be wrong inside the differential housing I wouldn't put anything but what the factory recommends. I'd probably hold off on the new diff cover too. We've heard too many horror stories of people getting warranty work denied for the lamest of reasons. Only after it has been resolved would I change it out to 75w140.

Thanks. Probably good advice to use their recommended oil. Makes you wonder, though, why the recommended oil for the M200 axle is, as I recall, 75w 140 and the recommended oil for the m220 is 75w 85!

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[mwilk012]

Thanks. Probably good advice to use their recommended oil. Makes you wonder, though, why the recommended oil for the M200 axle is, as I recall, 75w 140 and the recommended oil for the m220 is 75w 85!

Fuel economy. That recommendation is made by FCA, not by DANA. If you are having any sort of warranty work related to the axles being done, let the dealer do the factory fluids and covers, make sure the work is good by driving a full oil change interval, then change the cover and fluid yourself.

Don't mess with that warranty mess if you don't have to.

 

[roaniecowpony]

Thanks. Probably good advice to use their recommended oil. Makes you wonder, though, why the recommended oil for the M200 axle is, as I recall, 75w 140 and the recommended oil for the m220 is 75w 85!

A smaller ring and pinion will have a higher specific loading of the gear mesh contact area.

 

[roaniecowpony]

Wow ! Right now case of 4
Valvoline Flexfill 75W-140 for $52.88 that's $13.22 ea.
11/17/23 7pm EST

Go HERE.

Thanks for that. Ordered 4 cases.

 

[DanW]

Wow ! Right now case of 4
Valvoline Flexfill 75W-140 for $52.88 that's $13.22 ea.
11/17/23 7pm EST

Go HERE.

Great find!

I've got to check my new (to me) 2021 Gladiator's front diff to see if it has a drain plug. I sure hope I didn't get one of the newer ones where that was eliminated.

 

[roaniecowpony]

Great find!

I've got to check my new (to me) 2021 Gladiator's front diff to see if it has a drain plug. I sure hope I didn't get one of the newer ones where that was eliminated.

I wouldn't let whether you have a drain plug be the deciding factor on whether you change you own gear oil. Removing the cover buys you an inspection opportunity and the additional opportunity to epoxy pot your locker sensor, if you have a Rubicon. Removing the cover takes just seconds longer, with a small impact gun, than removing a plug. The gasket is reusable rubber molded over a steel pattern.

 

[cyked]

75w140 front and rear for a 23' Rubicon is what Dana recommends, right?

 

[DanW]

I wouldn't let whether you have a drain plug be the deciding factor on whether you change you own gear oil. Removing the cover buys you an inspection opportunity and the additional opportunity to epoxy pot your locker sensor, if you have a Rubicon. Removing the cover takes just seconds longer, with a small impact gun, than removing a plug. The gasket is reusable rubber molded over a steel pattern.

That won't decide it. What it will do is make me explore whether I need to buy a new gasket or can re-use the current one.

But I will say from experience, the front diff fluid, even after 30k, comes out almost clean as new and I never get much in the way of shavings on the magnet, thanks to the FAD.

But the Gladiator is at 35k miles and it's getting changed either way. I just hope it has the drain plug so it is easier.

 

[DanW]

75w140 front and rear for a 23' Rubicon is what Dana recommends, right?

Right. That's what I run in both. I like the Valvoline in the bag. Easy peasy.

 

[roaniecowpony]

That won't decide it. What it will do is make me explore whether I need to buy a new gasket or can re-use the current one.

But I will say from experience, the front diff fluid, even after 30k, comes out almost clean as new and I never get much in the way of shavings on the magnet, thanks to the FAD.

But the Gladiator is at 35k miles and it's getting changed either way. I just hope it has the drain plug so it is easier.

I've reused my rear gasket twice, and my front gasket about 4 times now. The trick is to not over torque it.

 

[Heimkehr]

I've reused my rear gasket twice, and my front gasket about 4 times now. The trick is to not over torque it.

Ditto, re: the OEM pan gasket for the 850RE transmission.

That wasn't surprising; only when I don't have a spare gasket on hand do I need one.

 

[Jeep Wick]

That won't decide it. What it will do is make me explore whether I need to buy a new gasket or can re-use the current one.

But I will say from experience, the front diff fluid, even after 30k, comes out almost clean as new and I never get much in the way of shavings on the magnet, thanks to the FAD.

But the Gladiator is at 35k miles and it's getting changed either way. I just hope it has the drain plug so it is easier.

I'm with you, but worse case you can get the ARB cover which is stronger, has magnets and it's own drain plug.

 

[CarbonSteel]

I've reused my rear gasket twice, and my front gasket about 4 times now. The trick is to not over torque it.

I reused both of mine more than 10 times before changing them.

 

[SBLACK502]

Does anyone you thread sealer on the drain and fill plug? My dealer said it’s not needed as long as it’s torqued down.. said they never have issues…thoughts?

 

[zouch]

pity they don’t have this deal on the non-Synthetic; Eaton doesn’t recommend Synthetic for the TruTrac, so i just use Dino juice in both pumpkins.

Wow ! Right now case of 4
Valvoline Flexfill 75W-140 for $52.88 that's $13.22 ea.
11/17/23 7pm EST

Go HERE.

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