Topping off the differential fluid on my 2021 Mojave

[axefan88]

How do I top off the differential fluid level on my 2021 Mojave ?
I had a small leak out the sensor and I want to check the level and add some fluid if needed.
The issue is that I don't have a jack and the stabilizer bar seems to most block access to the bolt I need to remove on the pumpkin.
- Please advise and as always thanks for the help !

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[Gvsukids]

How do I top off the differential fluid level on my 2021 Mojave ?
I had a small leak out the sensor and I want to check the level and add some fluid if needed.
The issue is that I don't have a jack and the stabilizer bar seems to most block access to the bolt I need to remove on the pumpkin.
- Please advise and as always thanks for the help !

There's room. Use a socket wrench.

 

[Hootbro]

It is a 3/8" square drive NPT plug. Just remove it and if anything dribbles out, it is full. If nothing dribbles, add fluid until it dribbles out.

Edit: What @Gvsukids posted works also.

 

[ShadowsPapa]

How do I top off the differential fluid level on my 2021 Mojave ?
I had a small leak out the sensor and I want to check the level and add some fluid if needed.
The issue is that I don't have a jack and the stabilizer bar seems to most block access to the bolt I need to remove on the pumpkin.
- Please advise and as always thanks for the help !

I'd bet that your small leak at a sensor lead won't make it low on fluid.
Think of how little it takes to make the whole thing look wet, or spread 3 drops on your garage floor and smear it around and look at what a mess 3 drops will make, yet that differential housing won't even miss those three drops.
Unless it's leaving large spots on the garage floor or driveway, or there's an oily mess under the truck, it won't be low.

There's room. Use a socket wrench.

I have a small 3/8" drive "breaker bar" that will fit into almost any area. Really low profile, great for many pipe plug fittings.

If ya pull that plug a bit and like Hootbro says, if fluid starts to show up, put it back in. If nothing shows up, but you can touch it with your pinky, it's ok.

 

[swtrailboss]

I'd bet that your small leak at a sensor lead won't make it low on fluid.
Think of how little it takes to make the whole thing look wet, or spread 3 drops on your garage floor and smear it around and look at what a mess 3 drops will make, yet that differential housing won't even miss those three drops

Yup!
Probably won’t need to add a few ounces!

 

[axefan88]

Yeah. I think youre right. I’ll check the level to be sure but am guessing I didn’t lose much.
im almost at 90k and have never changed the diff fluid. I don’t use the 4 x 4 and don’t off road. The dealer quoted me $225 to do it. I’m wondering if it’s something I should do maybe at 100k miles ?

 

[Hootbro]

I’m wondering if it’s something I should do maybe at 100k miles ?

Show it some love and do it now.

 

[ShadowsPapa]

im almost at 90k and have never changed the diff fluid.

Why not do it now?

It's not that difficult a job to do. Borrow tools if you need - or heck, the money you can save by not having a dealer do it could buy you a jack and a couple of stands.

 

[bleda2002]

Just loosen the bolts that hold the sway bar if you want more space takes like no time at all.

 

[Gvsukids]

m wondering if it’s something I should do maybe at 100k miles ?

Check your owners manual on how often it should be replaced.

 

[Maximus Gladius]

For all you 90k + diff change guys and gals, when you do pull the magnetic drain plug and see that nice mound of filings, if you have lockers, the locker sensor magnet will have the same amount of filings on it too. This will explain locker engagement and disengagement problems/slow response. If you’ve got that many miles on it, it would be super ideal to pull the diff covers off and clean out all the debris sitting in there.

 

[ShadowsPapa]

If you’ve got that many miles on it, it would be super ideal to pull the diff covers off and clean out all the debris sitting in there.

I ALWAYS pull the covers, always have. You might find a surprise in there that won't show up with just a drain. You don't have a filter to look at, and the drain plugs never allow any bits or sludge or whatever to come out with the fluid.
Pull the cover - it might save trouble down the road, or, just prove to yourself it's looking good, no major problems ahead.

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