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Thread: reinzosil Vs hylomar

  1. #1
    Join Date
    Feb 2012
    Location
    Southern Ontario
    Posts
    280
    My Cars
    93 850Ci, 2012 X5 35d

    reinzosil Vs hylomar

    I will soon be replacing my leaky valve cover gaskets, and am assembling parts and tools...

    I realize reinzosil hardens, and hylomar doesn't, should I be using one over the other? Are there places i.e. valve cover gasket or intake gaskets that I should specifically use one or the other?


    Any help would be appreciated....

  2. #2
    Join Date
    Jun 2012
    Location
    Woodstock, GA
    Posts
    566
    My Cars
    2001 BMW 540i6
    Regular black RTV is fine. Put some on the gasket itself on the half moons. Then on the engine, a dime sized dab at the creases where the timing covers meet the heads. That’s it.

  3. #3
    Join Date
    Dec 2013
    Location
    San Antonio
    Posts
    712
    My Cars
    850,76 2002 &530,84 633
    I followed several members suggestions when I resealed the rubber intake manifold gaskets on my car recently. I used the Reinzosil. I only use the Hylomar on the gear covers of my formula car transaxle because it does not stick to metal like rv sealant so its very easy to clean off. And, Hylomar does not last from my experience. Seems like it breaks down from oil after several months. I think its really only popular for those assemblies that will be resealed occasionally because its so easy to clean off, it just wipes off surfaces.

    So I cleaned rubber gaskets well and soaked them with silicone spray and then put them in ziplock bags and left them for some weeks until I was ready for reassembly. Supposedly the silicone will help revitalize the rubber. Then I cleaned the contact surfaces and applied Reinzosil on surface facing heads, waited several minutes, and then bolted them down. Did the same on intake manifolds and then stuck them onto gaskets/studs. You only need about 1mm of sealant. I believe the torque for nuts on head studs is around 17lbs and only 7lbs on manifold nuts.

  4. #4
    Join Date
    Jun 2012
    Location
    Woodstock, GA
    Posts
    566
    My Cars
    2001 BMW 540i6
    That’s totally unnecessary

  5. #5
    Join Date
    Jun 2008
    Location
    SF Bay Area
    Posts
    3,778
    My Cars
    Supercharged 850ci
    Reinzosil all the way.

  6. #6
    Join Date
    Jul 2016
    Location
    Chicago, Illinois
    Posts
    3,842
    My Cars
    are slow
    Reinzosil

  7. #7
    Join Date
    Dec 2006
    Location
    Sunny Cali,
    Posts
    8,730
    My Cars
    6.5 second 69 Camaro
    ...agreed,

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