Hi,
Does anyone know some Really Good Stuff (preferably available in the UK without having to sneak it out of a chemistry lab...) to descale aluminium with? e.g. Sodium Hydroxide would be no good as it'll dissolve the aluminium; Nitric acid might do (I know that fuming Nitric doesn't touch aluminium, but I don't know what effect, if any, it has on limescale)?
Basically, I've been cleaning the water jacket of my Jaguar block with a brass wire brush on the end of a Dremel, and frankly I'm bored to tears. Plus even the Dremel can't get into some of the deeper and less accessible spots, so a really good chemical clean would be a good idea. I've got a Toluene bath ready to do th outside, but that won't touch limescale...
Cheers!
Ade.
PS: it's REALLY important that the aluminium isn't damaged by whatever cleaner(s)....