Bloody Downpipes.

[Decoke Dave]

Have you done the usual Harpic Power treatment? That gets them back to a shiny silver colour. Still have to clean and polish them after but makes a bit difference

Ideal!  Thanks, I have the headers removed, do I simply pour it over the downpipes, leave, then wash it off?  Or should I scrub them with a hard brush?  Harpic should at least get the shit off!  :thumbup