Painting a galvanised chassis

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I've bought a new galvanised chassis for my series 3 land rover, its shiny and I'm spraying it black put how do I prepare to prime it.

Some people say to vinegar the chassis and somebl say to use chemicals to help primer to stick.
 
Make sure you give it a really good scrub in degreaser and wash it off well, when dry use T wash and then use a good chassis coating system. Specifying one will cause some argument so you takes your pick of paint and primer. However up to that point is a given.
 
On my aged but sound galv chassis I used in several coats a whole can of rustoleum special metals primer for galvanised and non ferrous metals, it did seem a bit chalky, i dont expect to use that brand again, some research came up with phosperic acid which i regularly use as rust killer/ neutraliser as being a good mordant to use on galv,
i overpainted it with this from my local farm supplys
teamac-zinc-phosphate-primer.png
And then a good anti corrosion tractor enamel,
I also sprayed copious waxoyl into the insides,
 
Last edited:
I put vinegar on the battery tray as seen in the picture and under the has not been touched
 

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