I plastidipped a few things and in my new bike, I did it on the licence plate holder and the results are excellent.
In my opinion, the surface to be plastidipped must be absolutelly dirt, silicone and oil free.
I don't recommend plastidipping surface that could get hot, very dirt or exposed to constant rubbing or friction such as chain guard or pegs mount. If you paint the tank, be carefull not to spoil fuel on it as it would wear and peel off.
Have in mind that painting large surfaces, will take quite a big number of Plastidip cans, so consider if final cost is really worthwhile.
You must apply several thin layers (not less than 5), trying not to overlap them, and wait a couple of minutes between layers. Then let it dry and clean with a soft rag. Once clean, you may apply a layer of wax or silicone in order to protect the plastidip. Avoid using solvents and do not use high-pressure washing machine on painted surfaces.
