Amerlock 400 is the go
My garage is done in this. After looking at dads shed, about 15 years its had the stuff on it and we have dragged, dropped, got thiners, oil etc on it and the only bit that has been damaged is missing a chunk of concrete. The stuff is great
We got it locally at an industrial paint etc supplier, can't remember how much but about 10L did the garage floor, the small shed slab and a little bit of concrete where my small clothes line is. Will try and get a photo in a bit