Anyone has any good tips about what yo use on brake drums to fight rust ? Last year i i brushed em down to remove all rust and then applied BBQ paint which i thought would hold up, but today i realized that only part of it held up, so now im a bit puzzled.

i heard of etching primer, which i hear etch into the metal to prevent rust, yet i dont know how efffective they are, as i`ve never used it.

Any advice would be appreciated.


Best regards to all