Originally Posted by dragray
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.
i use purple power to clean engines and stains on my driveway. awesome stuff. worked wonders on dirty aluminum valve covers