"Andy Dingley" wrote in message
...
On 3 June, 10:27, "Doctor Drivel" wrote:

When the inhibitor wears off the magna booster catches the
magnetite and other solids that would have blocked the heat exchanger.

Has anyone opened up a Magna booster and found this pile of mythical
sludge?

It is not mythical, it collects magentite on the magnet. The Magna Boost is
the best, catching magnetic "sludge" and other solids. It is easy to remove
the sludge, in the annual service.