My washing machine (steel drum) is heavily calcified. What is the best stuff
to get rid of the calcification? In the past I bought something which was
expensive but pretty useless. Using a stronger acid will destroy the rubber
gaskets.
What about vinegar? That's the cheapest solution I could think of. Usually
the water used is cold, but I could fill it up with hot water to speed it
up.
Any ideas?

Sigi