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Thread: Oil Drain Plug Snapped

  1. #1
    Join Date
    Feb 2020
    Location
    NE Florida
    Posts
    40
    My Cars
    1998 328is Coupe

    Oil Drain Plug Snapped

    Changing oil tonight and decided to replace oil drain plug with ECS Magnetic drain plug. On final pull to tighten, it of course snapped in two. By divine intervention, i was able to extract the rest of it with a flat screwdriver. So i went back to my old drain plug. First few turns (by hand) were fine, then it became very tight. Tried it again and this time with the ratchet (gently) through the tight portion for a few turns, then was able to turn by hand until the final turn. No leaks so far.

    I assume i jacked up the threads? Is this problem only going to get worse?

  2. #2
    Join Date
    Apr 2015
    Location
    Tennessee
    Posts
    1,736
    My Cars
    1998 BMW 328i
    If it torques to spec and doesn't leak then don't worry about it imo

    Sent from my SM-G975U using Tapatalk

  3. #3
    Join Date
    Jun 2013
    Location
    Houston, TX
    Posts
    44
    My Cars
    1997 328i
    I have also broke the drain plug before. Got a new one and replaced it and haven’t noticed any leaks since. And that was 60,000 miles ago. Now I always tighten it with a torque wrench though.

  4. #4
    Join Date
    Mar 2020
    Location
    Hutchinson ks
    Posts
    29
    My Cars
    1999 BMW m3
    you can always try to run a tap through it to make sure the threads are clean and not messed up next time you do an oil change... but then maybe run ( just pour dont actually start the car ) a quart of oil through it to wash the bottom of the pain out for any chips that it may have pushed through? just a idea, if it is messed up will probably have to pull the pan off no matter what... some one correct me if im wrong?

  5. #5
    Join Date
    Jun 2005
    Location
    New England
    Posts
    25,414
    My Cars
    F90 M5; E36 M3 Turbo
    You probably retreaded damaged threads by forcing the pan bolt in. Using a rethreader would have been better. If it goes in and out next time, don’t worry about it.

  6. #6
    Join Date
    Feb 2020
    Location
    NE Florida
    Posts
    40
    My Cars
    1998 328is Coupe
    Thanks, i was thinking (hoping) it might rethread when I put the bolt back in.

  7. #7
    Join Date
    Jul 2011
    Location
    Austin, TX
    Posts
    2,201
    My Cars
    S54 E36 M3, E32 740il
    I don't understand this.

    How do you snap that bolt at 18 lb-ft?

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