On Fri, 12 Mar 2004 18:39:00 -0500, "AG" >
wrote:

<snip>

Something pretty close to magical is electrolysis. Here is a page
(http://antique-engines.com/electrol.asp) that describes how to do it.
You just need a small battery charger, some washing soda and a
container big enough to submerge the grates in -- say one of those
plastic swimming pools for kids. The good thing about this technique,
apart from not involving the elbow greese, is that it will get rid of
the rust in all those hard-to-reach places that the wire brush might
miss. I'd think it would take maybe a couple of hours in the solution.