Oil pan and gearbox gasket sealant? | FerrariChat
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Oil pan and gearbox gasket sealant?

Discussion in '308/328' started by Irishman, Oct 20, 2019.

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  1. Irishman

    Irishman F1 Rookie

    Oct 13, 2005
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    Kevin
    #1 Irishman, Oct 20, 2019
    There are a few threads on the topic but most a bit old. I have seen recommendations about using something like hylomar (thin bead) on bold sides of the gasket and surrounding the stud holes.

    Any thoughts on what's best? Dry? Hylomar? Permatex?

    Thanks!
     
  2. lm2504me

    lm2504me Formula 3
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    Aug 26, 2004
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    #2 lm2504me, Oct 20, 2019
    Hylomar Blue worked for me on the engine oil pan and gearbox pan. Almost two years and no leaks.
     
    Peter likes this.
  3. Milkshaker0007

    Milkshaker0007 Formula Junior

    Sep 22, 2012
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    #3 Milkshaker0007, Oct 21, 2019
  4. Brian A

    Brian A F1 Rookie

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    #4 Brian A, Oct 21, 2019
    I used Loctite 574 Flange Sealant which is an anaerobic sealant. It came recommended to me from the vintage BMW crowd. Its nice because it doesn’t form “worms” like does RTVs.
     
  5. absostone

    absostone F1 Veteran
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    #5 absostone, Oct 21, 2019
    It needs to be gear oil compatible
     
  6. Brian A

    Brian A F1 Rookie

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    #6 Brian A, Oct 21, 2019
  7. mike996

    mike996 F1 Veteran

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    #7 mike996, Oct 21, 2019
    I have used Permatex MotoSeal for years on engines from Norton Commandos to DD 8V71TI's and everything in between. It is a solvent-based material. Works great, no insoluble squeeze-out to get into wrong places and it does not glue the parts together. It's pretty much all I use unless some specific sealant chemistry is required for a particular job.
     
  8. waymar

    waymar Formula 3

    Sep 2, 2008
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    #8 waymar, Oct 21, 2019
    Honestly. I used the bare green gasket 16,000 miles ago on both pans and my garage floor is dry. Just saying....
     
  9. Irishman

    Irishman F1 Rookie

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    #9 Irishman, Oct 21, 2019
    The common wisdom I have heard here is that while it looks like there are leaks with the pans/studs, the oil is coming from higher up (ie shift shaft seals, cam seals, etc.).
     
    Freddie328, Milkshaker0007 and Peter like this.
  10. thorn

    thorn F1 Rookie
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    #10 thorn, Oct 21, 2019
    It's easy enough to determine with a dye test if the oil is coming from higher up.
     
  11. tbakowsky

    tbakowsky F1 World Champ
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    #11 tbakowsky, Oct 21, 2019
    No sealant..not needed. Clean it real good and button her up. TORQUE THE PAN FASTENERS!! In a criss cross pattern to 8-10nm from center out.
     
  12. mike996

    mike996 F1 Veteran

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    #12 mike996, Oct 22, 2019
    I agree that in theory, no sealant is necessary with a gasket unless specifically called for. But in the real world, mating surfaces often don't mate as well as they should (or did when new). To emphasize the previous post, when this occurs, it is often due to improper tightening - usually overtightening - that distorts the parts/mating surfaces.
     
    thorn likes this.

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