Because the tee is down stream of the thermostat (which is closed) and
     is the heating pipes are cross connected to the output radiator hose on
     the engine block, the tee that is hook into the heater system pushes
     water through the engine block, input radiator hose, radiator, and out
     the end of the disconnected output radiator hose. If the heater control
     on the dash is in the hot position, I imagine that it pushed water
     through the heater cores as well but I did not verify this.  I also
     should have had in the instructions to put the heater control lever to
     hot.  Regardless of the theories, When I drained the block and radiator
     there was no coolant and only trace amount of sediment in the entire
     cooling system -- so it accomplished flushing the system.

     Also, one other person reported having trouble with these plastic
     tee's later leaking or breaking.  I am going to replace the tee when
     finished with a copper pipe.

     Vince.
     ________________________________________________________________
     Date:    Wed, 7 Apr 1999 09:02:46 -0700
     From:    Brent Christensen <bpchristensen@MINDSPRING.COM>
     Subject: Re: Cleaning & Flushing coolant system-- Fast & Effective
     Way.

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     What about the thermostat? =20
     Don't you have to remove it first in order to get proper flow?  Also,
     =
     what about the heater core?