"Phöènix" not@work wrote in message
.. .
I need to replace the inhibitor in my system. Decorating has seen most of
the inhibitor flushed away.

What's the simplest way to go about this. Any particular recommendations
as
to different inhibitors.

It is a closed system off a combi boiler.

Thanks jk

Try closing off a radiator and injecting the mastic type stuff in through
the radiator bleed point. You'll have to catch the displaced water unless
you've got some thin windscreen washer type tubing handy.
Jon