Switch on the ignition (for those with Climate Control), turn the heater control to full hot then switch off the ignition.
Stick a garden hose in the top rad hose removed earlier using a cloth to make a bit of a seal then let rip with the water until what runs out the bottom hose looks nice and clean.
Use the same method to flush the rad through, sticking the hose in the top pipe inlet.
Once everything is flushed out re-attach all the hoses.
Unscrew Expansion Tank Cap
Fill up slowly until you can't get any more in using new coolant and distilled water.(add half a litre of each at a time to keep the correct mix)
Once at the max mark, leave the cap off and start the engine.
The level will most likely drop straight away so add more until the level in the expansion tank ceases to fall.
Gently undo the bleed nipple on the heater matrix pipe until a steady flow of coolant is observed... gently tighten the bleed screw (not too tight or it will snap off )
Gently undo the bleed nipple on the drivers side of the rad until a steady flow of coolant is observed... gently tighten the bleed screw
Stick the cap back on and let the engine come up to full temperature, making sure its not overheating.
Then switch off and let the car fully cool down again before doing a final check on the level.
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