Winterize FWC Mack

Discussion in 'General Conversation' started by The Mitten, Sep 19, 2021.

  1. The Mitten

    The Mitten Well-Known Member

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    Jan 27, 2021
    Grand Ledge/ Ludington MI
    Hi guys,

    I'm sure this has been asked several times. I am going through the seasonal winterization process. Oil changes, check coolant freeze point, clean bilge.

    I have a quick flush connector just downstream from the strainer. I built a bucket with inlet and outlet hoses to run the motor without overpressurizing the sustem from city water.

    My qusetion is, do I need to drain the raw water side; I.E., manifolds, oil cooler and heat exchanger before running anti freeze, or can I just run 10 or so gallons straight through and call it good. I'm in Michigan, so it gets damn cold here.

    Thanks folks!

  2. Pequod

    Pequod Well-Known Member

    Likes Received:
    Jan 26, 2003
    Cape Cod
    I typically run non-tox anti free thru the engine and when I start seeing the anti freeze exiting both exhausts equally you are done.
    Bypass/drain your hot water heater (If you have one) by connecting the cold water inlet and hot water outlet together.
    Run non-tox anti free thru all fixtures. Don't forget your windshield washer
    Same applies to bait well, raw water wash down etc.
    Walmart has -50 degree non toxic antifreeze for $2.50/gallon.

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