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PTU & RDU both ok at 10k mile service

Geo8866

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Honestly, I don’t want to rain on your parade but the chances the Ford tech checked your diff fluids are slim to none. They probably (maybe) looked for obvious leaks, saw none and called it good. The most they could have done is pulled the fill plug and stuck a finger in to feel for fluid. No way to check fluid condition or clutch wear. Ford says those fluids are good for a “lifetime” and that is good enough.
I highly recommend you replace the RDU, PTU and trans fluid before 30k. If you can do it yourself, it can be done for less than $200. The dealership will probably charge you $1000. I was quoted $300 for just the RDU.
Less than $200? Doing it yourself is less than $50.
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ice445

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What the heck is up with all of you that want to distrust everybody so much.... Wow...
Its really easy to distrust dealers to be fair...

Im of the opinion though that if you have put eyes on it, you should just make the extra effort to change it anyway lol. Otherwise why even look? Visual inspection doesn't go very far with oils unless they're way overdue or something is coming apart lol
 

Cancunbadlands

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#Tremor is a solid build
 

KenE

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Less than $200? Doing it yourself is less than $50.
I paid roughly $65 for both fluids when I did it myself. Plus $12 for a fluid pump, which ill use hereafter. If you can change your oil, you can do this yourself.
 

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SteamPunque

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What the heck is up with all of you that want to distrust everybody so much.... Wow...
Multiple experiences with automotive dealer service departments . . .
More often than not, if the service manager is talking, there's some mistruthin' going on.
 

SteamPunque

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Did my RDU & PTU last weekend, I've had the Mav for a year, but have clocked less than 6k miles on it, the fluid refreshes were pretty easy overall, both seemed to be just under proper fill.

The RDU fill plug situation was a bit troubling, the magnet was missing. It's my understanding that the RDU fill and drain plugs are the same 6C2Z4N282AA part.

Whether the magnet gone missing happened prior to plug installation or the magnet got munched by the RDU gears is unknown. The drained oil was dark, I ran it through a fine steel screen and there was no obvious magnet residue.
Ford Maverick PTU & RDU both ok at 10k mile service RDU Fill + Drain Plugs 30OCT2025
 

801Maverick801

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Did my RDU & PTU last weekend, I've had the Mav for a year, but have clocked less than 6k miles on it, the fluid refreshes were pretty easy overall, both seemed to be just under proper fill.

The RDU fill plug situation was a bit troubling, the magnet was missing. It's my understanding that the RDU fill and drain plugs are the same 6C2Z4N282AA part.

Whether the magnet gone missing happened prior to plug installation or the magnet got munched by the RDU gears is unknown. The drained oil was dark, I ran it through a fine steel screen and there was no obvious magnet residue.
RDU Fill + Drain Plugs 30OCT2025.webp
They arent the same. The top does not have a magnet. Don't worry. If they are the same thread pitch, you can have a magnet installed top and bottom no worries.
 

SteamPunque

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They arent the same. The top does not have a magnet. Don't worry. If they are the same thread pitch, you can have a magnet installed top and bottom no worries.
Yeah, it's taken me awhile to respond, too much life goin' on.
Anyway, thanks for the response.
If you peruse the top plug in my photo, there's a chunk of something in the lower right quadrant that was firm to a dental tool poke and didn't appear to be magnetic, I assumed it was the remnants of whatever adhesive is used to glue the magnets into those plugs.
I'm not too worried about it since screening the used fluid didn't reveal any magnetic bits . . . of course any magnetic debris could be stuck to steel parts inside the RDU.
 
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Reznale

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RDU & PTU fluid change on mine at 15k miles, fluid was black full of metallic black gunk all over the plug magnet. My mechanic was concerned and I told him it's pretty much expected on these on the first change. PTU wasn't so bad. Glad I had both done, but wish I did them with the first oil change instead of second.
 
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Hootbro

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RDU & PTU fluid change on mine at 15k miles, fluid was black full of metallic black gunk all over the plug magnet. My mechanic was concerned and I told him it's pretty much expected on these on the first change. PTU wasn't so bad. Glad I had both done, but wish I did them with the first oil change instead of second.
Mirrors what I seen when I did the RDU & PTU fluid change also at 15K miles on my wife's Bronco Sport. Recently changed the fluid again at 30K miles and it looked pretty much still pristine with very little gunk on the magnets.

Plan to do my Maverick RDU, PTu and Transmission initial fluid change at 5K miles and then again at 15K miles and repeat ever 30K miles after that.
 

ShadowBlack XL440

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Just did my 10,000 mile service with Full synthetic, tire rotation, all fluids checked etc.
80 bucks :’P
I had them check fluid levels in Both the PTU and RDU
Both properly filled and both checked no charge.
All tires at 7/32 tread depth.

No recalls,
No updates, this 2024 needs nothing.
Runs, drives and behaves flawlessly.

I’ll keep doing my Italian tune ups.
I just changed my, MY25 XL Hybrid w/4K towing, PTU and RDU @ 12k miles and in my opinion they were both low, dark fluid, and had debris on the magnetic plugs. Change your fluid early due to the break-in process. There is such a small amount of fluid that it has to get a lot of abuse. I also changed the transmission fluid, fluid looked great and no discernible debris. If I were to do it over, I would have just drained about 1/2 quart of fluid and topped it off. It was almost a quart below full when I changed it with no leaks. Must have been low from the factory which matches both the PTU and RDU too.

Ford Maverick PTU & RDU both ok at 10k mile service RDU


Ford Maverick PTU & RDU both ok at 10k mile service PTU
 
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Cherokee

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I’d bet in 12,000 miles your new fluid load will be just as black.
You’d need to lab test it for condition and contamination levels
 

ShadowBlack XL440

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I’d bet in 12,000 miles your new fluid load will be just as black.
You’d need to lab test it for condition and contamination levels
And if it does look as bad, I will change it again. Not sure what your point is, just let it go??? It is not a diesel engine, if it is black it will be from heat. The 1/2 quart of fluid is cheaper than the lab testing.
 
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ShadowBlack XL440

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What the heck is up with all of you that want to distrust everybody so much.... Wow...
I have some ocean front property in Arizona that I am willing to sell you cheap. Just let me know how you want to make the down payment. /sarc
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