The newer rads aparantly are made with a water based flux says Marci. So i boiled the kettle and ran my hot tap. Lucky i had an old pump about, Eheim 1048 and some bits of hose. Left it running whilest i had a :banana::banana::banana: and wow it did work. Boiling hot water steamed my kitchen up and rad is clean inside now as loads of white crap came out! Suck as when i get the 5 or 6 other rads i'm going to have to do this.









Video for the hell of it