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Thread: Coolant flush-Need help!

  1. #1
    Join Date
    Mar 2005
    Location
    Hockinson, Washington
    Posts
    2,499

    Default Coolant flush-Need help!

    I drained the coolant using the drain plugs on the block and the rad. I then ran water from the hose in the expansion tank to that it ran out the engine block. I torqued the black plug down and ran coolant in the expansion tank and out the rad drain plug.

    Question: Is it now sufficiently flushed, or can i start it up with water running in the expansion tank and out the bottom of the rad with the heater on to further flush it?
    Lowered with blue h&r(?) springs, Bilsteins, tint, 19# design 3 injectors, Dual Magnaflow
    southwest WA

  2. #2
    Join Date
    Dec 2003
    Location
    baton rouge, loserana
    Posts
    6,922

    Default

    should be good to go with that unless you had some major crud infestation going on, i usually just dump everything and refill unless i got seriously nasty sludge
    all america wants is cold beer warm cat and a place to take a poop with a door on it

  3. #3
    Join Date
    Mar 2005
    Location
    Hockinson, Washington
    Posts
    2,499

    Default

    The coolant that came out didnt look bad except for the green color. I just filled it up with straight water and warmed it to operating temp with the heater on. Im waiting for it to cool down again so that i can drain the water and fill it up with coolant.
    Lowered with blue h&r(?) springs, Bilsteins, tint, 19# design 3 injectors, Dual Magnaflow
    southwest WA

  4. #4
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,839

    Default

    yeah thats about it, I only took one block plug out on the pass. side as Im lazy. I filled and drained and ran 3 times before I did a final drain and refilled with the correct amount of antifreeze and then topped it off with distilled.
    95 E34 530I V2.37
    ===========
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