I use Simple Green, http://www.simplegreen.com/products_all_purpose_cleaner.php
an all purpose cleaner sold in the US and Canada, it will work on all the paint types I have tried it on, including Alcad II.
It may take a day or two to work but the lesser toxicity, over brake fluid and the minimizing of damage to your skin from oven cleaner contact ; all that makes it my first choice.
But what ever you settle on, use it safely & wisely; after all if the product removes paint its got serious stuff in it.