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Rusty coolant system

  1. #26
    Lifer Kurlon's Avatar
    Join Date
    Jun 2007
    Waterboro ME

    Re: Rusty coolant system

    Quote Originally Posted by Pittenger5 View Post
    I can flush it clear pretty easily, but then after running it for the year, itll be like loose baby shit brown regardless. So its there.
    Also, I don't know what/how the previous owner treated it, so dunno if they just ran tap water or what.
    Flush it aggressively to get any sediment out, and I don't mean fill, heat cycle, dump; I mean put the hose to it with the drain pulled and run some FLOW though it. Next, optionally, run a treatment option of your choice, dilute vinegar and time, commercial radiator flush, CLR if you wanna go REALLY aggressive, etc. Once done, put distilled water in it, use a track safe/legal additive package like Cool-Aide/etc as a corrosion inhibitor, and change the water more frequently going forward.

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    Mistake - 1992 WR250ZD / 2000 LS650P / 2019 KTM 150SX / 2016 KTM 250XC

  2. #27
    Changes come butcher bergs's Avatar
    Join Date
    Jul 2007
    the humbling river

    Re: Rusty coolant system

    Quote Originally Posted by Kurlon View Post
    I mean put the hose to it...
    Not a good idea as it will only continue the issue. You don't want any tap water going into a cooling system, ever.

    Yes, the distilled water will dilute the tap water but the iron (and other minerals) are still present in the tap water regardless of dilution. There will still be a reaction within the cooling system.

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