Arch extension coming off!

[filthy]

grease doesn't work, i tried it on my old mercedes, then put the chrome arch trim back on...a year later when i took it in to get the arches replaced, most of that arch had disappeared 

[Jay]

Ah cheers, I'll get some of that anti-rust stuff they use on oil rigs etc, that thick black stuff and maybe the other rust converter liquid so that I can squirt that up inside the arch to stop it rusting up there.