Since my new Audi V6 30V is installed now, I have to change the blue to the
new orange antifreeze, because the orange stuff was used in the V6.

I don�t have a bentley, so can someone please tell me the correct (and
easiest?) way to flush the whole system? It is a pain to get all water out
of the system by opening all hoses (radiator, rear heater, engine...)

Thanks for the help

Raimund