coolant flush 4.2 d3

[carterleeds]

hi guys, im wanting to flush out my coolant, as i have just replaced my coolant sensor at the back of the engine i think its the G62 one.

so i wanted to know where the drain points are for my v8 4.2 so i can get rid of all the coolant....

i know where the bleed valves are near the pollen filter, well i havnt looked as yet but i will today, but i cant find anything else on draining the coolant.

thanks in advanced