Neil,

It looks like a little surface corrosion to me, not something that
would compromise the integrity of the tubing. Get down there with a
pocket knife and give it a few light scrapes. If you don't see bright
copper under it after easy scraping, you have a problem. If not, some
steel wool--or nothing--will be OK. It's probably an appearance thing.
If it were on your copper roof they'd call it verdigris and you'd pay
handsomely to get it.

Now that's a thought... a copper roof on a westy. Hmmm.

Jim

On Fri, Jun 19, 2009 at 7:47 PM, neil N<musomuso@gmail.com> wrote:
> Hi all.
>
> While installing my new chi-chi Nautilus ShurFlo sink pump, saw this
> on propane lines:
>
> http://tinyurl.com/lg9y92
>
> (for bigger pic):
>
> http://tinyurl.com/lws48t
>
> I assume moisture got in foam bit which then made contact with sheet
> metal and caused a reaction over time.
>
> Is this normal? Leave it alone? Clean?
>
> Maybe I could get in there with some Brasso and a rag.
>
> Thanks!
>
> Neil.
> --
> Neil Nicholson '81 VanaJetta 2.0 "Jaco"
>
> http://tubaneil.googlepages.com/
>
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
>