aluminum siding cleaner

From: aSkeptic (scott_at_yannitell.com)
Date: 10/26/04 

Date: 25 Oct 2004 21:49:06 -0700

Think stained aluminum siding is forever ugly? I found that it can be
cleaned. I found this stuff at my hardware store called "aluminum
cleaner". The label says it contains phosphoric acid. It is a gel
like stuff. Its great stuff. I thought I'd never get that crud off. I
tried bleach, powerwashing, soap, ammonia..

-Scott