OK, I agree that the heater loop by-passes the thermostat and may flush the engine
and heater loop(s).  BUT!!!   the cold water shuts off the thermostat so most of the
coolant in the radiator and ALL of the coolant in the long return hose (from radiator to
thermostat) will NOT get flushed.   So how does this "Tee" method flush the long
return hose from the radiator to the thermostat????    Again, I suggest removing the
thermostat and then flushing, as an alternate to the (lengthy) Bentley method. Please
set me straight.   Malcolm

On 1 Aug 2002 at 14:17, Jay L Snyder wrote:

>
> Yes!  This is the beauty of it.  It is tied into the heater loop which
> is always open (at least it is on my 1.9l '85).  SNIP  Turn on the
> water and flush away.  When it is fairly clear, run the engine with the
> pressure cap off and excess flow coming out of the tank.  Remove the
> radiator bleed bolt and put the pressure cap back on loosely.  You will
> have a little fountain shooting out the top of the radiator.  When all
> is clear, shut off the engine and remove the hose.