I have a small can (a pint) of PPG Deltorn Acrylic Urethane paint I used on my truck and now want to paint my 82 Goldwing. The can is full and unopened, but probably 10 years old (well, I just opened it to see what color it was). I aslo have catalyst (DAU2) Hardner (DCX61) and Reducer (DT860). Some of this stuff is probably not made anymore. The bottles of catalyst, hardner & reducer have been opened, but sealed since. If this is all I need, I would be able to repaint the motorcyce for cheap. (I also have some tubes that say "liquid activator" that have nothing in them - I wonder if this is needed??) My question is: Is there a shelf life to these products or will I be safe to use them up? Also, I've lost the instructions on the mixing portions of each. Any one out there that can advise?