coolant hoses

Discussion in 'Diesel Engines' started by crzhors, Sep 15, 2006.

  1. crzhors
    Joined: Aug 2006
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    crzhors Junior Member

    A good mechanic question:What lubrication is preferred when reinstalling coolant hoses to Waterpump,Heat exchanger,Oilcooler etc? The old hoses had rotted to the castiron. Does Anti-seize hurt the rubber? Or white grease?
  2. StianM
    Joined: May 2006
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    StianM Senior Member

    Use vaseline.

    Go too the farmasy and ask for vaseline witch contain nooo acids.
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    FAST FRED Senior Member

    The welding of the rubber to the fittings is a GOOD thing as it helpd keep the system tight.

    For the 1 or 2 hoses that need removal to winterise , or, White waterproof grease works fine , but use 2 clamps.

  4. gonzo
    Joined: Aug 2002
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    gonzo Senior Member

    Soft setting gasket compound works well too.

  5. Vince Hosea
    Joined: Dec 2005
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    Vince Hosea Junior Member

    The best thing to do is just use water, antifreeze or a soap water solution misted from a spray bottle. Most engine hoses should not need any other kind of lubricant.

    However, every now and then I run across some odd ball size fitting that was most likely cast wrong or damaged from corrosion. Also, the wire reinforced hose on wet exhaust and intakes is usually very tight fitting and a real bear to install. For these situations I have used an oring lubricant like "Seal Glide" since it won't harm the rubber. So far, so good and I have been doing engine work for about ten years. I try to use the soap water solution first, and use the oring lubricant sparingly as a last resort. Also, make sure you are using the right size hose. The biggest thing you want to be aware of is not to use a lubricant that is incompatable with the material of the fitting or flange. For example, don't use copper based antisieze on a metal flange that is made from aluminum because the aluminum will corrode. I'm not sure how antisieze effects rubber. Good luck.
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