What can I use as a concrete release agent for aluminum forms?
I know this is late, but I'm pretty sure you could get away with PAM or grease for releasing aluminum from concrete. Commercial release products are an assortment of commonly used items like mineral oil, or silicon lube, or graphite; less common are metal stearates (like zinc stearate in a can). I have played around with zinc stearate. I still have some that I should proably throw away, since I don't really have a serious need for it.