You cannot get all the fluid out without a flushing machine. Todays cars are not like the old days. Fluid get trapped inside the block and the heater and can only be forced out with a pressure exchanger.
I am sorry, but I dont believe that you cannot afford to spend the money considering what it will cost to repair the damage from this.
Roy
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Sunday, July 10th, 2011 AT 4:27 AM