I am working on my cars interiors, so different questions, please bear with me

I bought some Scuffmaster gliptone dye for my X type a few months ago and have never opened it. The product should still be fine, correct?



If I use a aerosol (not a paint gun) to apply, do I need to dilute it with water?

Also, I have read that some guys use a "clearcoat" on top of it....my order only came with some sponges and the bottle of dye. No clearcoat on the package or instructions. Do I need this coating on top of the dye??



Thanks!!