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How to: PTU Oil Change (Tons of Pics) 2016 Explorer Sport

Discussion in 'Stock 2011 - 2019 Ford Explorer Discussion' started by Lexingtonian, May 14, 2017.

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  1. bigdude2468

    bigdude2468 Active Member

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    My 2014 Ex does NOT have a drain plug. Only way to do it is to suck out about six or seven ounces by putting a tube down through the fill port. Then refill knowing you are only changing about 1/3 of the fluid.

    I do have a question. If I were to raise the vehicle on all four corners (securely) could I siphon out as much as possible, refill, start engine and put in drive for say 30 seconds, drain, fill, repeat a couple of times.
     
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  3. Mr Pink

    Mr Pink New Member

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    That would be a pretty lengthy process.
    You could always drill and tap the ptu and install a plug
     
  4. bigdude2468

    bigdude2468 Active Member

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    I have thought about doing that but as the drill makes the final penetration I have to think a small quantity of metal will deposit itself inside the case. Also as you turn the tap there will be some small metal particles that could fall off. Get that flowing around and in a bearing and you could cause a failure. Anybody try loosening the bottom bolts and just prying the case open a smidge and letting the fluid drain out over a day or so?
     
  5. KayGee

    KayGee Well-Known Member

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    Please don't do that. Maybe delete it so no one else attempts it either.
     
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  6. Jacob Thomas

    Jacob Thomas New Member

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    Hey y'all. I decided to drain and fill my PTU today and it was an experience to say the least. I'm a mechanic full time so that helped a lot with finessing stuff lol.
    I got a suction pump from AutoZone zone and a quart of Royal purple 75-140 gear oil. I also got a smaller hose from Lowe's and the Included hose was a half inch and would not have been able to go down into the PTU to suck the fluid out . I drained the fluid and it was not that bad looking but I did notice a decent amount of of gunk and fine particles on the drain plug though .I filled the PTU by snaking a new length of hose up through the engine bay and slow filled it with the bottle and used not quite half of the bottle. It took about an hour to fill the ptu using this method and I filled it till a small amount of old fluid came out and I let it drip for a bit as well. I then cleaned up the oil as best I could and put the fill plug back in and test drove it around the block then I checked for leaks . Im not sure if it was a placebo effect or not but it seemed to pull harder at wide open throttle but I was going down a slight hill lol.
    Oh and I only have 50k miles on my Ex btw .
     
  7. Skullcandy

    Skullcandy New Member

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    This is awesome. I am doing this right now and literally took 15 min to get the fluid draining without a mess and I was able to reach up from underneath and pop the vent line off. Fluid looked ok I guess but the metal on the plug damn. And not a lot of fluid came out! Thats not acceptable at all !!!! I am wrapping that cat to help keep the heat off the PTU as well.


    Thank you!!

    DFE4B2ED-2A1D-4CFA-A641-B5CCE097253A.jpeg

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  8. 613GT500

    613GT500 Well-Known Member

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    That's the cleanest PTU oil I have see...ever!
     
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  9. Skullcandy

    Skullcandy New Member

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    103500k on the Vehicle. I’m assuming they never changed it based on how much came out.
     
    Last edited: November 12, 2018
  10. peterk9

    peterk9 Staff Member Moderator Elite Explorer

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    I think you meant 103.5k.;)

    Peter
     
  11. Skullcandy

    Skullcandy New Member

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  12. Skullcandy

    Skullcandy New Member

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    Took quite awhile to refill. Here’s my refill setup.

    54DD19FC-EAA3-40C0-8A91-46CFFE595DF2.jpeg

    074D3694-85B4-48A0-BDBB-A69AA943A504.jpeg
     
  13. Skullcandy

    Skullcandy New Member

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    Tryin a heat mitigation technique.

    66609B73-74FE-4E96-9E14-ACF13017EFF1.jpeg
     
  14. KayGee

    KayGee Well-Known Member

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    I used a pump that you screw on the gear oil bottle like a soap/lotion dispenser. Add a piece of clear hose to reach the ptu and it fills the ptu pretty quickly.
     
  15. JAPeterson

    JAPeterson Active Member

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  16. Lexingtonian

    Lexingtonian Active Member

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    I just changed my PTU Fluid again after roughly 38,000 miles since the last change. I wanted to add the Pics taken so you could see the wear metal differences vs the pics at the top of the thread. The plug magnet was still saturated but there was much less metal in the oil. Still more than I'd like but some metal appears to be "normal" for this design.

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    And the latest Oil Analysis to go with it -
     

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    Last edited: December 20, 2018
  17. KayGee

    KayGee Well-Known Member

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    To me, that seems like a lot of particles/metal in that oil. Did the sample you sent in contain large visible particles like the pics above in the catch pan?
     
  18. Lexingtonian

    Lexingtonian Active Member

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    Yes it did. Take a look at the oil pan in the first photos at top of thread versus the ones above here. Huge difference in suspended particles. Enormous frankly. Also look at the oil analysis I posted right above the particles of iron are less than half. That’s why it’s so vital to drain this transfer unit early and its life cycle because there’s so much loose iron.
     
  19. KayGee

    KayGee Well-Known Member

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    All that "loose iron" is not naturally occuring - it is from wear. My 2 PTUs changed at ~15K miles had quite a few particles on the drain plug, but did not have the levels of visible "loose iron" in the remaining oil as yours. I would not want to see that much "loose iron", so even though the analysis may justify a longer change interval, I would prefer to change earlier before all the "loose iron" being generated overwhelms the drain plug magnet and the excess "loose iron" is allowed to circulate and accelerate wear. My personal opinion is that cleaner fluid is better than dirtier fluid - no real science or emotions behind it.
     
  20. Lexingtonian

    Lexingtonian Active Member

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    Thanks for setting me straight. Truly appreciated. Sorry for providing low-value content and information. Cheers. All the best this holiday season.
     
  21. KayGee

    KayGee Well-Known Member

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    I didn't set you straight. I just wouldn't want to see that many large particles and it would concern me. If I saw that in my PTU fluid, I personally wouldn't consider extending the drain interval just because a report said I could. If you want to do that, you are free to do so and I wish you the best of luck with that strategy.

    No harm, no foul.
     

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