Re: Best way to strip spraypaint from plastic?
purple power degreaser (it used to be called castrol super clean).
BUT, you'd have to submirge the tank in it and let it soak for a few hours.
if the paint id fresh this stuff will take it right off.
I use it all the time to strip paint on plastic model car bodies.
use a toothbrush or a stiff brush to scrub the paint away aftger it's been soaking for awhile.