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Thread: Leaky diff

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    Leaky diff

    Got got an oil change today and the kid said there was a sweat on the diff. He took my phone and got a pic (no customers allowed downstairs). I know it's a terrible picture but is this something to really worry about? Or can I take my time (within a month) to get it repaired? I'm no tech but looks like the pinion seal to me...


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    @Sticky sorry if this is wrong section
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    It's fine man let's get you answers.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    It's fine man let's get you answers.
    do you know anyone to tag in here that could help?
    BSM 2008 135i N54
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    Click here to enlarge Originally Posted by Wescuddles Click here to enlarge
    I know it's a terrible picture but is this something to really worry about? Or can I take my time (within a month) to get it repaired?
    As long as there is a good amount of oil in the diff, you won't damage the gears or bearings by driving. It does look pretty wet but it might not be leaking that bad (oil's not pouring out or dripping) so I'd say it's been leaking for a while already. Definitely get it repaired but I wouldn't lose any sleep on it. Did the tech check the diff oil level while he was there?

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    Click here to enlarge Originally Posted by Wescuddles Click here to enlarge
    do you know anyone to tag in here that could help?
    @alex@ABRhouston

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    We just did this for another E90 last week. It's the pinion seal, and shouldn't be done by a novice, due to pinion turning torque settings.
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    Click here to enlarge Originally Posted by AlexQuattro Click here to enlarge
    As long as there is a good amount of oil in the diff, you won't damage the gears or bearings by driving. It does look pretty wet but it might not be leaking that bad (oil's not pouring out or dripping) so I'd say it's been leaking for a while already. Definitely get it repaired but I wouldn't lose any sleep on it. Did the tech check the diff oil level while he was there?
    He did not but I will get it in somewhere ASAP. Thanks!
    BSM 2008 135i N54
    -VRSF 7" IC -VRSF DP's -n55 mids -BERK race -ER CP -TIAL BOV -BMS DCI -JB4 G5 ISO -ST coils -STOPTECH slotted rotors & pads -SLeK lip

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    Click here to enlarge Originally Posted by alex@ABRhouston Click here to enlarge
    We just did this for another E90 last week. It's the pinion seal, and shouldn't be done by a novice, due to pinion turning torque settings.
    Thanks for the help man!
    BSM 2008 135i N54
    -VRSF 7" IC -VRSF DP's -n55 mids -BERK race -ER CP -TIAL BOV -BMS DCI -JB4 G5 ISO -ST coils -STOPTECH slotted rotors & pads -SLeK lip

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    the amount that has come out is so small, it won't need a top off.
    Click here to enlarge
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