Quote Originally Posted by Dick61 View Post
I have two tubs for de-rusting, one with molasses and when I remove the items I hose them off and drop them in a tub with a capful of Napisan. This neutralizes the acid in the molasses, otherwise the thing will flash rust as it dries. I rinse the item with fresh water when it comes out of the Napisan and then either dry it with an old flannel shirt or just leave it in the sun. Just make sure you give any item done this way a really good clean before you paint it, the Napisan needs to be completely cleaned off or paint adhesion can be a problem, the same as soda blasting.


Dose the molasses remove flaky rust or just surface rust? I have a lot of fiddly bits off my engine that need doing ( exhaust manifolds, pre-heat cover and all the rest of the small pieces ) will it ruin the inside of items like the choke hot air tubes ect. Would it work on exhaust manifolds? Where would be the best place to buy it?

Cheers