As above how do i do this?
tried today by disconnecting the hose at the bottom of the rad and flushing from the water header tank with a hose but obviously this only flushes the length of hose from the tank to the radiator, can a more thorough flush be carried out as my water is brown and also appears to be a bit frothy??

If so how do i do this?

thanks guys

 

get some forte bio degreaser put it in with water bleed it let it get hot then drain then take thermostat out once the engine has cooled refit the top rad hose to the engine side and remove bottom hose then pour water into top hose until bottom runs clear, do same on rad then refit pipes re fill then bleed
job jobbed!

 

lol completely forgot to take the stat out, will give this another go tomorrow, thanks very much

 

If wanting to do a mega decent job also remove the block drain plug.
I simply use wynns cooling system flush for 200 miles or so prior to dropping water, it grabs all the crap and it forms as a congealed mush in the expansion tank, so needs clearing out, works amazingly well though, wynns say 10-15 mniutes but never had a problem my way, be aware though, if a sealing agebn has been used to seal a dicky rad or matrix this will remove the seal!!
tabetha