Linked out the radiator cooler for the autobox and done a lot of flushing and the colant "seems" pretty clean, hope I might have got away with it!! I never did find the drain tap on the passenger side of the block, does anyone know if there "really is" one hidden there amongst all the fitments or might it be blanked off with a bolt etc. in this model? Will give it all a few more miles to convince myself and then change all the other lubes just in case. Many thanks for everyones assistance. Regards, Bob Green.