1st Gen R53 Cooper S Heat Exchanger Oil Leak

Discussion in '1st Generation: 2002–06 R50, R53 & 2004–08 R52' started by minsanity, Oct 6, 2013.

  1. minsanity

    minsanity Well-Known Member

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    #1 minsanity, Oct 6, 2013
    Last edited: Oct 6, 2013
    Just discovered some wetness around the heat exchanger below the oil filter housing. Rate should be between weeping & light dripping. A lil trace of film around the axle boot directly below it got me checking. No oil stains on my garage floor & dipstick oil level hasn't dropped yet.
    Would appreciate some DIY/Tips on the O-ring swap. I'm hoping I wouldn't have to replace the exchanger. Sadly, I figured it's known to fail....
    Am I right to presume taking the exchanger off would drain both coolant & oil from the filter housing? Hmmm, imagining a mess. If so, this might be best done together w/ fluid refresh then.
    Thanks, guys!
     
  2. minsanity

    minsanity Well-Known Member

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    Hmmm, close to a hundred views & no replies? I must the lone guy hit w/ this here. Hope those who've had 1st hand experience could chime in. Thanks!
     
  3. Nathan

    Nathan Founder

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    It's only been less than 12 hours, most of those overnight. Add in the weekend when the site is slower and I'm not surprised there has yet to be a helpful reply to an issue that is not at all common.

    Please give it some time and I'm sure you'll get some quality assistance.
     
  4. Crashton

    Crashton Club Coordinator

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    What flavor MINI? R50-R53 or R56?
     
  5. Dave.0

    Dave.0 Helix & RMW Powered
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    I had his same part dial on my R53 a few years ago. I had and oil slick from the heat exchanger to my rear bumper on the passenger side. (Free rustproofing :ihih:)

    Mine was not the cheap O rings and gasket, I had to have the whole oil heat exchanger replaced because of a cracked pipe.

    Good luck with yours.
     
  6. minsanity

    minsanity Well-Known Member

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    Excuse the impatience, Nate. Was just bumpin'.:wink:
    Crashton, it's an 02 R53 w/ only 48k on it. I know age has taken its toll on those rubber parts. Stocked some of those random o-rings but missed this 1. Just wondering if any out there has just changed the 2 o-rings to cure this long term or had to just put in a new exchanger.
    Dave, pipe cracked by itself? Surprised you didn't go for an external oil cooler.
     
  7. Crashton

    Crashton Club Coordinator

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    #7 Crashton, Oct 6, 2013
    Last edited by a moderator: Oct 6, 2013
  8. minsanity

    minsanity Well-Known Member

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    Thanks, Crash. Planning to order those w/ some other parts & goodies. Would be great to find some detailed DIY guide before I start digging. The OCD is kicking in.:D
     
  9. Dave.0

    Dave.0 Helix & RMW Powered
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    Yeah well, I think it happened when I jumped my car by mistake. :incazzato:

    Once on a back road that i did not know at all and once at the Dragon on the Dragon. Neither once did I try to jump my car on purpose.
     
  10. TheModFather

    TheModFather Well-Known Member

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    Dave... Keep the rubber on the ground! You don't brake stuff that way... :)
     
  11. minsanity

    minsanity Well-Known Member

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    Guess, I'll have to learn from Dave & stop jumpin' the car.:biggrin5:
    Just jacked the car earlier for closer inspection. Oil is coming from exchanger. Nothing too bad. Just slight weeping that must've collected on the bottom torx bolt. Car's due for coolant & oil change soon anyway. I'm tempted to swap out the exchanger & the O-rings, of course. Your say, guys?
     
  12. Nathan

    Nathan Founder

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    I'd say it is better to catch and fix a slight leak before it becomes a major leak.
     
  13. minsanity

    minsanity Well-Known Member

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    Can't & won't disagree with you, Nate. I'll be doing everything when parts arrive.
     
  14. MCS02

    MCS02 Moderator
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    Once on the Dragon? Egads!! If we make the next Dragon I'm not following you. :eek: or maybe that would be fun. :devil:
    Drive it like you stole it! :biggrin5::biggrin5:
     

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