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Thread: 5hp18 fluid change/add

  1. #1
    Join Date
    Sep 2006
    Location
    San Diego, CA
    Posts
    184

    Default 5hp18 fluid change/add

    Last Friday, I lost one of the trans cooling lines on the way home. The replacement parts arrived from Patrick @ BMA this morning. I'm going to install the new lines this evening, but wondered if there are any special tools I need to drain and refill the transmission. For some reason, a 17 mm allen wrench is coming to mind, but I don't know why.
    www.universal5.com
    Orange Tool Forum
    San Diego, CA

    1994 e34 530i Eibachs/KYB
    0 miles on new windshield

  2. #2
    Join Date
    Jan 2004
    Posts
    158

    Default

    Yes. You'll need the 17mm allen head socket to remove and install and torque the fill plug to 74lb. The drain plug only requires around 12 or 14 lb torque.

  3. #3
    Join Date
    Sep 2006
    Location
    San Diego, CA
    Posts
    184

    Default

    Thanks!
    www.universal5.com
    Orange Tool Forum
    San Diego, CA

    1994 e34 530i Eibachs/KYB
    0 miles on new windshield

  4. #4
    Join Date
    Feb 2006
    Location
    Oldham, England
    Posts
    3,074

    Default ATF fill

    I love the design feature inside the box - a nice plate to stop you putting the tube inside to fill it I found cutting the end like a quill pen helped. And before you ask, no I didnt use them at school: we had fountain pens!

  5. #5
    Join Date
    Sep 2006
    Location
    San Diego, CA
    Posts
    184

    Default

    I'd picked up a pump and just shifted it to the side. Cutting it might have made it easier. The old fluid looked like motor oil. After three fills and drains it started looking like trans fluid again.
    www.universal5.com
    Orange Tool Forum
    San Diego, CA

    1994 e34 530i Eibachs/KYB
    0 miles on new windshield

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