That i dont know, but i bought a litre tin off ebay the other day, and they still sell it at autopaints in brighton
actually it was 2.5 litres https://www.ebay.co.uk/itm/BONDA-RE...979892?hash=item1cd9222cf4:g:TvcAAOSwGBVdVyU4
I tend to brush it on anyway, goes on quite smooth and easy to flat down if you need to. I do use it in a spraygun as well
yes a little bit with cellulose thinners, supposed to be 10% , i normally just chuck it in till it looks ok, sprays really nice
Red or yellow plus sign on the tin makes no difference, just marketing. Same red lead coloured paint inside.