Right, disconnect the lower radiator hose to drain the rad, then undo the thermostat housing (this is on the end of the lower rad hose, follow it along and you will find it!) this will drain the block. do them all back up again. put the heater controls inside the car to maximum heat, then refill the coolant system via the expansion tank, run the engine till the fan comes on once then check the level and top it up as necessary!
