White crystals in the tube

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by quatto, Oct 20, 2019.

  1. quatto

    quatto Medium Load Member

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    Ok, so I'm not a mechanic but seem to have white crystals growing everywhere...EVERYWHERE inside the water filler tube right under the cap. We only use the best coolant and none of the other trucks have this crapola growing. I would appreciate any ideas. Thanks!
     
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  2. Tx Countryboy

    Tx Countryboy Road Train Member

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    Always heard silica in antifreeze will do that when it needs flushed & new antifreeze.
     
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  3. Old Man

    Old Man Road Train Member

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    Trucks use low silicate antifreeze, rear the bottle.
     
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  4. Tx Countryboy

    Tx Countryboy Road Train Member

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    When it goes antifreeze needs changed the silica is no longer suspended & clings to metal.
     
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  5. Snow Monster

    Snow Monster Medium Load Member

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    Maybe used tap water instead of demineralized water?
     
  6. quatto

    quatto Medium Load Member

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    Nope. But thanks for playing!
     
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