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Thread: Best sealant for M54 valve cover gasket leaking oil

  1. #1
    Join Date
    Feb 2016
    Location
    North lakes
    Posts
    11
    My Cars
    Bmw x3 2.5l

    Best sealant for M54 valve cover gasket leaking oil

    New gasket on X3 M54 Engine valve / rocker cover still leaking at the back at the lobe.
    This drops down onto the exhaust and causes smoke.
    What's the best sealant to prevent this ?
    RTV Silicone ?

    There were traces of silicone at the casting area at the gasket ears / lobe points when I replaced the gasket.
    Thanks

  2. #2
    Join Date
    Jan 2009
    Location
    Lansdale, PA
    Posts
    1,990
    My Cars
    00 M '96 Z3
    The only place that I put sealant is was the front and rear half moons. I used red permatex. Make sure gasket is not crushed where the leak is.
    2011 Z4
    2010 MB GLK 350
    2000 M Roady
    1998 Lincoln Mark VIII LSC
    1996 Z3

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