Fist buy some PrestoneCoolantFlush and add to your radiator and let it run in you system for minimum 30min.. AutoZone or any Parts Store or Walmart should carry PrestonCoolingFlush and a flushing kit aound $30.00 or less ..I had to get this when I needed to flush my system ...all it is a T-port that connects to the hose running to the radiator and to the heater core..you cut the hose and insert the T-port and clamp down with some screw-in c-clamps..then on top of the T-port is a threaded end for a water hose to be screwed on..apply water hose to top of T-port..After that unscrew the radiator cap off while the engine off then turn on water to the water hose ..unscrew the drain plug at bottom side of radiator and let drain also...Crank the Rover and turn the heater on high and let the water run through the entire system until the water turns completely clear then turn off car and unscrew the water hose and leave the T-port on there for just in case for another flushing be easier next time just apply seal off cap to the top of T-port and tighten the drain plug on bottom of radiator and apply the right amount of coolant then apply the radiator cap back on and it should be then completely flushed..Hope this was of any help...Good Luck
Purchase a Prestone flush kit, a container of radiator flush, and new antifreeze at a automotive parts store. There are directions on the flush kit package. What you will be doing is adding the chemical to your cooling sytem then inserting a flush tee into a heater hose and back flushing the system using your garden hose. Works very well.
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