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Center Rear Brown Fluid Spill (2002)

Discussion in 'Stock 2002 - 2005 Explorers' started by Drummadude, January 5, 2012.

^^Searches ExplorerForum.com^^





  1. Drummadude

    Drummadude New Member

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    Fellow Explorers,

    I'm not very knowledgeable about cars, but I'm guessing this is the transmission fluid? Or the differential? I just saw a brown puddle in my garage situated approximately between the rear wheels.

    This vehicle has stained my driveway and garage with fluid drips but this looks more substantial.

    Here is a picture:

    [​IMG]

    Thanks for your time. :exp:
     
    Last edited: January 5, 2012
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  3. jchristian79

    jchristian79 New Member

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    If it was between your rear wheels it's probably your rear diff. If that's coming from your tranny, you've got some big problems! :)

    Rear diff fluid is 75w140 so it's pretty thick and if it hasn't been changed in a long time it will look really dark and sludgy, at least that's what mine looked like when I changed it a month ago.
     
  4. Drummadude

    Drummadude New Member

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    Thanks - would this be considered a concern?
     
  5. jchristian79

    jchristian79 New Member

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    Well, for me, any fluid leak is a concern on any of my vehicles. How much of a concern is another matter. It's hard to tell the scale of that puddle in the picture, so I can't say for sure how much has leaked out. The capacity for a Gen 3 rear diff is around 1.6-1.75 liters I believe. And once it leaks, it means it will probably keep leaking.

    The lower your fluid gets in your differential the more damage it can cause. At the very least you'll probably get some noises coming from back there.

    I'm no expert on differentials, but I do know that if it is your rear diff, it will always be in use which means it's probably not something i'd recommend letting slide. If you don't feel comfortable checking into this yourself, I'd recommend you take it to a shop that can handle it for you.
     
  6. Exproblems

    Exproblems Well-Known Member

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    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

    From your picture and the graphics on my older computer, along with the area you found the oil drops, I agree with "JChristian79", rear diff leak. The drops look black in color on my PC screen, indicating some kind of a dirty oil leak and tranny fluid is red or redish in color and would leave drops more towards the middle of the front seat area of the vehicle. You should at least get it checked out for the source of the leak and make sure your rear diff is full of fluid, gear oil Synthetic 75W-140. If you can crawl under the back end of the truck, look for fresh oil drips on the bottom edge of the rear diff cover plate/seal or on the front side of the rear diff, where the drive shaft connects to the rear diff, look at the bottom edge for fresh oil drips. There is another seal there as well. That is where they tend to leak, at the front or rear diff seals.
     
  7. Drummadude

    Drummadude New Member

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    Thanks for your analyses. I will have it checked out. :thumbsup:
     
  8. Thub

    Thub Active Member

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