Hi,
I've got got just a few baseboards to paint, and a leftover half can of Behr acrylic semi gloss that's about 5 yrs old. I took it to the store to shake and it looks fine and smooth except that it is pretty thick. I hate to waste it; could i dilute it with water to a paintable consistency? When it dries, will it look as good as a new can? I love the sheen of the mouldings I did originally with this paint.

I don't remember how thick it should be though, could someone give me a guideline.

thanks.