Check this out. I used Mantis Heavy Duty Degreaser for outdoor BBQ grills. Which said it works on cast iron AND Aluminum. I have brand new window trim now. Its in a can ,spray it, let it foam out, wait, then rinse, and then wipe. VOILA! 42 years of guck gonzo. Now to paint the window trims, crank the tunes and crack a beer. Ahh life is good.
