02-12-19, 04:15 PM
(02-12-19, 12:05 PM)Decoke Dave link Wrote: [quote author=Dudeofrude link=topic=25779.msg305838#msg305838 date=1575216245]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
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
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Best method is to pour some harpic in an old cup and then grab a paint brush and just paint it on (paint brush helps get in all the nooks and crannies) leave for 5-10 minutes then just rinse off. You'll see the change instantly.
Has to be Harpic Power though for some reason as normal bleach wont work. That Harpic has some kind of extra corrosive ingredient ?♂️