Rust removal liquid...
Hi just come across this thread, I have been told about this, and watched several clips on U-tube, that Molasses, as used in cattle feed as an additive, makes a very good, cheap and 'green' (as in non-polluting) rust remover.
I haven't tried it myself yet as a farming friend is supposed to be getting some for me but it hasn't turned up yet.
It's about £18 for 25 Litres from a farm supplies depot. Mix it at about 9 parts water to 1 part molasses in say, a wheely bin or large tub and immerse the rusty parts for a week or so, remove, brush with a wire brush and hose off, a pressure washer is good. May need further soaking if the rust is really heavy.
I understand it's the sugary acids which gently eat the rust and convert it to sludge. It won't work on oily or greasy parts nor rust under paint.
Last edited by 8 Valve Ed; 16th December 2014 at 23:00..