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- Joined
- 27 Aug 2011
- Posts
- 266
I see green on copper pipes a lot when the flux hasnt been cleaned off after theyve been soldered so i guess it could be the same thing.
Have you got any of that mayhems cleaner stuff? I ran that through my loop for a day or so and it cleaned out all my old blocks and rads really well.
Pretty sure its supposed to be just the rads for part one then all for part 2.
It certainly looks like rust, might be a flaw in the plating might have been there before you used the block, going by the grinder marks on the block I would have sent it back anyway, it's as rough as a Badger.
They always have them swirly marks on them, i assume they leave them on to add more surface area rather than buffing them smooth.