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#4515324 - 09/13/17 03:55 PM Ford PTU gear oil life
dlundblad Offline


Registered: 09/30/13
Posts: 9302
Loc: Midwest
A quick BITOG search hasn't shown much info on the Ford power transfer units (PTU) found in various AWD Ford applications. I browsed through the most recent thread (~Spring 2016) and didn't see this posted so I figured it'd be worth mentioning and discussing.

Here's an interesting link I found. Blackstone recomended 10k intervals on a PTU with the factory cooler. Explorer Forum
Keep in mind, this is on an Explorer. I am not sure if there's any differences between these and other AWD Fords. Tauruses, (as well as the SHO), Fusions, Edges etc.

Some PTU's have coolers while some do not. Also, at least on the older models for the North American market, there's plenty of how-to's on adding a drain plug because originally Ford thought it was a lifetime fluid. Simple Googling has shown many failures well under 100k. They get hot and when they're by the exhaust, I imagine they get even hotter.


Edited by dlundblad (09/13/17 04:07 PM)
Edit Reason: Removed extra )
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03 Jeep WJ 4.0 197k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 170k M1 0w40 Mann HU818X
97 Chevy Blazer 4.3 138k Synpower 5w30 Fram TG3980


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#4515341 - 09/13/17 04:19 PM Re: Ford PTU gear oil life [Re: dlundblad]
DoubleWasp Offline


Registered: 05/21/12
Posts: 5178
Loc: Fort Lauderdale, FL
From what I've seen of those without coolers, if be doing that every 5k miles.

Once out of warranty, I'd add external cooler, pump, and filter.
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#4515438 - 09/13/17 06:14 PM Re: Ford PTU gear oil life [Re: dlundblad]
Ammofirst Offline


Registered: 06/22/17
Posts: 333
Loc: Western usa
What fluid does it call for. Hopefully not some proprietary special sauce at $50.00 a quart

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#4515444 - 09/13/17 06:16 PM Re: Ford PTU gear oil life [Re: dlundblad]
bdcardinal Offline


Registered: 06/03/05
Posts: 10584
Loc: Santa Barbara, CA
75w140. We have seen just as many failures with the police units that have the larger cooler as the ones that don't.
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#4515530 - 09/13/17 07:53 PM Re: Ford PTU gear oil life [Re: DoubleWasp]
Colt45ws Offline


Registered: 08/15/06
Posts: 9589
Loc: Central Washington
Originally Posted By: DoubleWasp
From what I've seen of those without coolers, if be doing that every 5k miles.

Once out of warranty, I'd add external cooler, pump, and filter.

Agree. The heat is destroying the oil is such a short period of time you almost might as well do monthly or weekly changes. Its so pathetically underengineered.
I think like $500-600 could get you a professional oil circulation pump, stacked plate OTA cooler, filter and filter head, plumbing and lines. If you can keep the oil under 200F average you could probably run 30-40-50k on a change.


Edited by Colt45ws (09/13/17 07:53 PM)
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#4516445 - 09/14/17 07:31 PM Re: Ford PTU gear oil life [Re: dlundblad]
buck91 Online   content


Registered: 04/17/12
Posts: 2360
Loc: West Michigan
Did a little under 12mo and around 10k miles on my wife's 2014 Explorer with Amsoil SG 75w140. Came out looking almost as bad as the OE stuff did at 70k miles.
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#4516461 - 09/14/17 07:47 PM Re: Ford PTU gear oil life [Re: bdcardinal]
4WD Offline


Registered: 09/21/10
Posts: 5429
Loc: Texas/International
What does the cooler look like? - mine has a scoop under bumper and air duct back to the region. One pipe was so close that I had a muffler shop swing it wider to both move heat source and be able to reach the drain plug. I wrapped the pipes with a really good header tape.

Will try my method of oil change in 3 weeks - going with Motorcraft ...
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#4516726 - 09/15/17 04:50 AM Re: Ford PTU gear oil life [Re: 4WD]
dlundblad Offline


Registered: 09/30/13
Posts: 9302
Loc: Midwest
I haven't had a chance to take a closer look, but from what I've seen online, it just has 2 coolant hoses connected to it.
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97 Chevy Blazer 4.3 138k Synpower 5w30 Fram TG3980


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#4517005 - 09/15/17 11:42 AM Re: Ford PTU gear oil life [Re: dlundblad]
buck91 Online   content


Registered: 04/17/12
Posts: 2360
Loc: West Michigan
Hey now this is exciting! Hooked up my obd2 Bluetooth and opened forscan lite. It is able to monitor Tue ptu temp sensor (which is called transfer case.temp).

Was 145 degrees when I just scanned on a short trip, but the car was driven a lot earlier in the day also.

I'll post back when I have better data.
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#4517919 - 09/16/17 03:07 PM Re: Ford PTU gear oil life [Re: buck91]
4WD Offline


Registered: 09/21/10
Posts: 5429
Loc: Texas/International
Did you stick with ASG? Thinking I'll go MC until warranty is out and then try Redline - anyone running that in Ford PTU's?
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#4517973 - 09/16/17 04:39 PM Re: Ford PTU gear oil life [Re: dlundblad]
buck91 Online   content


Registered: 04/17/12
Posts: 2360
Loc: West Michigan
8 miles from "cold" start with 85f ambient temperature. Ptu is 157f.




Edited by buck91 (09/16/17 04:40 PM)
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#4518494 - 09/17/17 11:10 AM Re: Ford PTU gear oil life [Re: dlundblad]
MolaKule Offline


Registered: 06/05/02
Posts: 18655
Loc: Iowegia - USA
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#4518542 - 09/17/17 12:12 PM Re: Ford PTU gear oil life [Re: dlundblad]
Whimsey Offline


Registered: 12/22/02
Posts: 3902
Loc: The Garden State
Does the AWD beat up the PTU fluid worse than the 4WD does in a 2017 2.3 EcoBoost Explorer? If I'm not mistaken if the 4WD is not engaged then the Explorer is in front wheel drive mode. Is it using the PTU while in FWD? With the 2.3 EcoBoost in this Explorer it looks like there is plenty of air space between components underneath. I don't have an under body "shield" which makes doing any maintenance underneath easy. I had the dealer change the PTU fluid at 9,000 miles and will do again around 18,000 miles. It looks like it's a beotch to do yourself. At that point I'll have the dealer change the rear diff also, it also looks like a real pain to change compared to the rear diffs that I'm familiar with. Sad to say I'm not getting any younger and my body fights me everyday. Though changing the oil& filter and ATF is a piece of cake on this vehicle grin.

Whimsey

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#4519114 - 09/18/17 04:20 AM Re: Ford PTU gear oil life [Re: buck91]
dlundblad Offline


Registered: 09/30/13
Posts: 9302
Loc: Midwest
Originally Posted By: buck91
8 miles from "cold" start with 85f ambient temperature. Ptu is 157f.




Was it actually holding at this temperature? 157*F doesn't seem too bad.
_________________________
03 Jeep WJ 4.0 197k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 170k M1 0w40 Mann HU818X
97 Chevy Blazer 4.3 138k Synpower 5w30 Fram TG3980


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#4519119 - 09/18/17 04:41 AM Re: Ford PTU gear oil life [Re: MolaKule]
4WD Offline


Registered: 09/21/10
Posts: 5429
Loc: Texas/International
Even lower with Motorcraft FF - 262F (0.7)
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2014 Fusion Hybrid
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