[roKWiz]

Originally Posted by Warrenk

The trouble with polishes like Silvo and Brasso is they contain ammonia. From all the reading I have done on polishing aluminium it is not wise to use polishes with ammonia which can cause tarnishing of the aluminium in a short period of time.
A line taken from a US polishing forum "polishes contain ammonia which can cause aluminum to oxidize and tarnish a lot faster than it should. Products with ammonia seem to work really good but they do more damage in the long run. Be careful what you use!"

She looks great whatever you are using.

The idea of the Silvo type products is to knock off the dull surfaces first, then apply a car type polish (automotive application) over to protect finish.
Silvo itself recommends it for Aluminium. Says so on the can.

If I'm trying to use it on a really dull unrestored surface, I'll mix it with a little kerosene first to cut down the surface.
Some of those older fluted side caravans and buses had anodized finish which really slows down the process.